Statistics and Probability questions and answers in March 2023 — Page 6

apa-cite. Health Information Management. As the manager of an ED, you are faced with the challenge of improving flow and better matching your staffing plan to patient demand  . Emergency Department A...
This only needs to be a paragrah or two in length What is the difference between correlation and causation? Include real-world examples in your answer that illustrate the difference between correlatio...
  show me steps, use R is fine.. 1. Exactly 100 employees of a firm have each purchased one ticket in a lottery, with the drawing to be held at the firm's annual party. Of 80 men who purchased a tick...
Can you help me with three questions? I'm not sure where to start from. Any help would be appreciated.  . In a modern corporation, the CEO is rewarded substantially when the company does well. They a...
Help pls. We run a study and we obtain a p-value of .29. What can we conclude (select all that apply)? C] The results were due to chance C] We cannot rule out chance as a reasonable explanation for ou...
 . Borough of Manhattan Community College MAT 209 (Statistics). Mid-Tenn Exam (3/2 3/23) Prof. Jean W. Richard Spring 2023 YOU MUST SHOW ALL W'ORK TO RECEIVE FULL CREDIT Name: Problem # 1 1 23 fits)...
 . A decade-old study found that the proportion, p, of high school seniors who believed that "getting rich" was an important personal goal was 70%. A researcher decides to test whether or n...
Can you help me with three questions? I'm not sure where to go from. Any help would be appreciated.    . The weights of a cup of slice fresh strawberries are normally distributed with mean of 166 gr...
 . Espafiol USing the latest in medical technologY, an orthopedic doctor has developed a new surgical procedure that he believes is an improvement over the standard procedure. He wants to study whet...
 . A standard poker deck has 52 cards, of 13 ranks {A, 2, . . ., 10, J, Q, K } and 4 suits {diamonds, clubs, hearts, spades}. What is the probability that a hand of five cards contains: . a queen of ...
If the standard deviation is .005mm, the probability that a shaft is acceptable is?. A particular manufacturing design requires a shaft with a diameter of 17.000 mm, but shafts with diameters between ...
 . Independent or Dependent Samples Exercise For each of the following research questions, you will read an independent and dependent samples study to test that research question. Identify which stud...
Select answers: Increases or decreases. In order to determine the relationship between the number of units sold of a company's product (y) in 10 cities with the number of stores (z ) their main compet...
Answer question D:. A particular manufacturing design requires a shaft with a diameter of 17.000 mm, but shafts with diameters between 16.987 mm and 17.013 mm are acceptable. The manufacturing process...
Statistical models help us describe and summarize relationships between variables. Understanding how process variables relate to each other helps businesses predict and improve performance. A  market...
   . Standardized tests: In a particular year, the mean score on the ACT test was 20.5 and the standard deviation was 2.5. The mean score on the SAT mathematics test was 546 and the standard deviati...
 . Let X1 and X2 be jointly Gaussian with E[Xi] = E[X2] = 0, Var[Xi] = Var[X2] = 1, and Cov[X1, X2] = =. Define Y1 = 2X1 + 1 and Y2 = X1 - X2. Define the random vector Y = [Y1] Y2 (a) Calculate the m...
I am trying to figure out how to use SPSS to Take a random sample of 100. Calculate the 95% confidence interval for the variable. Calculate a 90% confidence interval. Take another random sample of 400...
A Student is: a) Better off b) Worse off. c. The probability is 25% that a student taking the test scores higher than what grade? The probability is 25% that a student taking the test scores higher th...
A comparison was made between the Michigan report and the 1969 cancer-incidence rates from the Connecticut tu- mor registry, where the expected incidence rate, based on the age distribution of the Mic...
 . We would like to use these sample data to test if there is a difference in the proportion of females vs. males who reported having ever cheated on an exam. a. Using correct notation, give the null...
 . A multiple linear regression analysis involves 4 independent variables and 35 observations. The unexplained variation, [(y - y) = 214.5, and the coefficient of determination, R- = 0.61. What is th...
A  production manager  can use hypothesis testing to test assumptions and theories. These assumptions are tested against evidence provided by actual, observed production data. A statistical hypothes...
I'm having trouble answering this questions. Can you help me and provide explanation on how you got your answer.  Question Use the RT data from Lab 4. Compare the four different number of choices (1,...
 . Jump to level 1 A financial advisor wants to determine how the amount of time spent on financial education affects the amount of debt. 50000 The equation of the regression line is Y = 50000 + (-50...
I'm having trouble answering this questions. Can you help me and provide explanation on how you got your answer.    Question Use the RT data from lab 1. Compare the auditory, visual and auditory-vis...
Summarize my findings of the increase in budget between 2004 and 2008  . increase in budget between 2004 and 2008 Mean 0.14812179 Standard Erro 0.03037437 Median 0.08969194 Mode #N/A Standard Devi 0....
Question C:. A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 71 and a standard deviation of 7. Complete parts (a) through (d). a. What is...
Question C:. One year consumers spent an average of $23 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is $5. Comple...
Question C:. A particular manufacturing design requires a shaft with a diameter of 17.000 mm, but shafts with diameters between 16.987 mm and 17.013 mm are acceptable. The manufacturing process yields...
One of the props I use for teaching probability in my ground classes is a deck of cards. A standard deck of cards has 52 cards. These cards have four of each value such as four two's, four three's, et...
 . Question 4 A multiple regression equation with 2 independent variables has the following properties: o For every 4-unit increase in 1, y decreases by 68 units on average, holding 72 constant. o Fo...
Random married men, all retired, were classified according to education and number of children: 0-1 children elementary 33, Secondary 30, College 12. 2-3 children elementary 37, Secondary 21, College ...
 . Question 1 1 pts You might have someone in your household that opens a can or bottle of soda but then never finishes it, leaving sometimes a lot or sometimes just a little liquid left in the cont...
 Q. 3.  Consider the sample of 1,400 past negligence cases.  Suppose you are willing to let the 67% estimate be within .025 (2.5%) of the true proportion.  You are willing to assume a 95% confiden...
 . One year consumers spent an average of $23 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is $5. Complete parts ...
Waiters at a restaurant chain earn an average of $245 per shift (regular pay + tips) with a standard deviation of $39. For random samples of 38 shifts at the restaurant, within what range of dollar va...
The amount of time travellers at an airport spend with customs officers has a mean of  μ =32 μ =32 seconds and a standard deviation of  σ =11 σ =11 seconds. For a random sample of 35 trave...
 . 9. Consider the scalar Ito equation d1: 2 (1le — £3ng with N1 and N2 being Poisson counting process of rate A and u, respectively. (a) Compute 5mm in terms of a, b, A, ,u and 833(0) (b) Suppose...
      Which two concepts have the strongest direct influence on risky sexual behavior?  Report the path coefficient number for each. Which three concepts have a significant relationship with Sexua...
Suppose that a 95% confidence interval for (u1 - u2) is calculated to be (1.4, 6.7). If we test Ho : u1 - u2=0 versus Ha : u1 - u2 does not equal 0 using alpha= 0.005, will we reject Ho? Why or why no...
 . Question 1 1 pts You might have someone in your household that opens a can or bottle of soda but then never finishes it, leaving sometimes a lot or sometimes just a little liquid left in the cont...
 . Data showing the values of several pitching statistics for a random sample of 20 pitchers from the American League of Major League Baseball is provided. Player Team W ERA SO/IP HR/IP R/IP Verlande...
   . The following estimated regression equation based on 10 observations was presented. y = 29.1470 + 0.5707X1 + 0.4960x2 Here, SST = 6,724.125, SSR = 6,224.375, sb, = 0.0819, and sb, = 0.0561. (a)...
  Which of these: low margin of error, male and female subjects, similar experimental and control groups, and evaluating results over time is the fundamental design principle that ensures meaningful ...
 . 9. Consider the scalar Ito equation dx = adN1 - bdN2 with M and N2 being Poisson counting process of rate ) and M, respectively. 2 (a) Compute Ex(t) in terms of a, b, ), M and Ex(0) (b) Suppose th...
The 2022 General Social Survey contains information on the number of hours worked by a respondent each week. The mean number of hours worked per week is 44.82, with a standard deviation of 18.32. The ...
 . A test has 10 multiple-choice problems, each of which is worth 10 points. 6 problems have 3 choices for each problem (you choose from A, B, and C). 4 problems have 4 choices for each problem {you ...
 . Suppose your device has a 20-bit binary sequence humber (each bit could be either 0 or 1} given by the manufacturer and the sequence number is completely random. Let X be the position of the first...
A researcher took a random sample of men age 18 to 30 and a random sample of men older than 50.  The sample data is used to create confidence intervals to estimate the population parameter, mean chol...
Let X be the number of courses taken by a part-time student at a college. The following table shows the probability distribution of X with probability as a percentage. Number of Courses , X on N Proba...
 . In a certain mixture of radioactive isotopes there are two main reactants having mass x and y, respectively. In suitable units, these decay according to the stochastic equations dx = -.0ladd, dy =...
 . 3. If M1 : P -+ [0, 1] and /2 : P - [0, 1] are two different probability measures corre- sponding to the same choice of S and P then we can define the distance between /1 and /2 as PEP d (M1, M2) ...
 . Assume a Bayesian belief network with the Naive-Bayes structure for a simplified version of the pneumonia problem (see figure below) The variable Pneumonia is at the root of the Naive Bayes networ...
(Q1, 4parts) The following are responses to the question How many hours of sleep did you get last night" 5 6 8 7 7.5 3.25 7.25 8.75 8.25 6 7 5 6.5 5.25 8.25 4.75 6 5 7 8 7.5 6 6.75 5.25 7.5 9 4 8...
1. Which of the following statements about a 99% confidence interval for p is true? I. A 99% confidence interval for p will contain the true p 99% of the time. II. The margin of error (d) will increas...
ability to care for device upon discharge female scores   7   10   7   10 8 0 10 7   5 10   10 9   7 6 5 6   4 10 10 8   9 8 10     0 5 5 10   7     6 10 7 4 5 4 8 7 3 5   2   10   7 ...
A data set x subscript 1 comma space x subscript 2 comma horizontal ellipsis comma x subscript n spaceconsisting of only positive values is heavily right skewed. A new data set y subscript 1 comma spa...
(9.3) The following values are obtained from a random sample that was drawn from a normally distributed population. [2.57, 2.07, 3.37, 1.75, 2.3, 2.1] If we are interested in creating a 90% confidence...
(S 9.3) A random sample of size 12 is taken from a normally distributed population, and a sample variance of 15 is calculated. If we are interested in creating a 95% confidence interval for of , the p...
(S 9.2) Recall that a confidence interval for the sample mean can be calculated using the interval Thus, the margin of error is {n-1 - 7 We can recover the margin of error from an interval constructed...
(S 9.1) Recall the formula for a proportion confidence interval is p(1-p) <P<p+21 p(1-P) n Thus, the margin of error is E = zy p(1-p) NOTE: the margin of error can be recovered after constructin...
 . Assume a Bayesian belief network with the Naive-Bayes structure for a simplified version of the pneumonia problem (see figure below) The variable Pneumonia is at the root of the Naive Bayes networ...
 . Assume the Bayesian belief network in the figure below. Assume that every variable in the network is binary representing T,F values, except variable D that can take on three possible values T,F,X ...
 . Purchasing a mountain bike Il-Gear Action Three criteria: price, gear Bike A B C action, weight/durability A 1/3 1/7 Three types of bikes: A,B,C B 3 1 1/4 Developed pairwise comparison matrices I,...
 . John has 3 kinds of fruits to be compared and he made subjective judgment on which fruit he likes best, like the following Apple Banana 9 7 5 3 1 3 5 7 9 Apple V + Cherry 9 7 5 3 1 3 5 7 9 Banana ...
ANOVA --Select the appropriate analysis to determine if the four different groups scored significantly differently on an agility test. Interpret and write a short results paragraph. Copy your SPPS out...
 . 1:49 2 4 x IT .Ill 81% Quiz 4 Question 2 Answer saved Marked out of 1.00 To two decimal places, the arc length of the curve y = 2x3/2 from = 0 to x = 4 is Select one: a. 16.60 O b. 16.60TT O C. 22...
A systematic review is conducted based on a focused clinical question. Which of the following are evaluated using inclusion and exclusion criteria to evaluate quality and strength of the research stud...
In steps please and use TI calculator if needed. 1. Roll a fair six-sided die 50 times and let X denote the average of the rolls. a) What is the probability that the average is between 3 and 4? b) How...
 . A double-blind study using random assignment was done of pregnant women in Denmark. Women were Calculate the value test statistic given fish oil or a placebo during pregnancy. Their children were ...
 . A double-blind study using random assignment was done of pregnant women in Denmark. Women were Check that the conditions for conducting a hypothesis given fish oil or a placebo during pregnancy. T...
 . Distribution of sample means in a normally distributed population In a previous lab, we simulated sampling from a uniformly-distributed population - die rolls - and investigated the distribution o...
Airplane manufacturers use only slow-burning materials. For the plastic in coffee pots, the maximum burn rate is 4 inches per minute. An engineer at Beechcraft randomly sampled from a case of 120 Krup...
 . Assume that adults have IQ scores that are Normally distributed with a mean of u = 105 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ of 126 or abov...
A machine produces single-cell batteries in batches of 31. Suppose that in a specific batch, 19 of the batteries are functional (the rest are not). A quality control worker randomly selects 26 of the ...
Info from question:     Data: We will use the dataset "MASchools" included in the package "AER" . The dataset contains data on test performance, school characteristics and student demographic backgr...
   . Sha... My Atlas M Gmail Dashboard & myUCF Client Control Panel G Home | Guild Educ... Medical Terminolocuiltaic... Jenean Haggins 03/23/23 12:23 AM Chapter Seven) Question 9, 7.5.94 HW Scor...
  In the World Values Survey respondents were asked their age (in years) (q262) and to what extent they believe "casual sex " is justified (q193).  The respondents were asked to rate casual sex on a...
Question 1:   Nuclear power: The following table presents the number of nuclear reactors as of August 2, 2013 , in some countries that had one or more reactors.     Country Number of Reactors Count...
Suppose a restaurant offers three different types of desserts: cake, pie, and ice cream. The probability that a customer orders cake is 0.4, the probability that a customer orders pie is 0.3, and the ...
May you please answer 11-14 (must show formula, interval, and sentence). 10. Canoe Survey A survey of 50 first-time white-water true proportion of adults who said that they will travel canoers showed ...
May you please solve problems 7-9 (must show formula, interval, and sentence). Exercises 7-3 1. In each case, find p and q. 8. Travel to Outer Space A CBS News/New York Times a. n = 80 and X = 40 poll...
 . Questions 4 (5 marks): The following data shows students marks before and after they attended a remedial statistic "boot camp". Is there evidence at the 0.05 level of significance that the bo...
De acuerdo con los registros históricos de un rastro, el peso promedio de las reses que llegan al matadero es de 750 kg con desviación estándar de 150 kg. Determine la probabilidad de que el peso p...
The link is https://inst-fs-iad-prod.inscloudgate.net/files/ff4c7d0f-8459-4ced-9cd1-aa0aa6ce6db5/theParisExperiment.pdf?download=1&token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzUxMiJ9.eyJpYXQiOjE2Nzk1Mjg1NT...
We have calculated a confidence interval based on a sample of size n=192. If we want to have a new margin of error that is only half of the original size (i.e., mnew=0.5*mold), we need to change the s...
Please help  . Opinion on artificial intelligence LE Many people think that "Artificial intelligence will widen the gap between the rich and poor." A researcher is interested in the opinions ...
The ages of a group of 140 randomly selected adult females have a standard deviation of 16.9 years. Assume that the ages of female statistics students have less variation than ages of females in the g...
   . Go to the website: https://www.timeanddate.com/stopwatch/ Try to stop stopwatch at 5 seconds. Record what the stopwatch reads below. Record to the thousandths place. Repeat this experiment at l...
Many people think that "Artificial intelligence will widen the gap between the rich and poor." A researcher is interested in the opinions of UCLA students regarding this matter. The researcher's team ...
 . 9:40 PSY230_M2_Data_Spring2023-1.xisx Q1 Q1_Codebook Q2 Q3 Jenny Nicole Molly X 143 170 7 Population LL 152 16 2 Dashboard Calendar To Do Notifications Inbox. 9:40 PSY230_M2_Data_Spring2023-1.xlsx...
 . 9:40 PSY230_M2_Data_Spring2023-1.xisx Q1 Q1_Codebook Q2 Q3 Jenny Nicole Molly X 143 170 7 Population LL 152 16 2 Dashboard Calendar To Do Notifications Inbox. 9:40 PSY230_M2_Data_Spring2023-1.xlsx...
ANOVA Single factor analysis using excel ONLY   Data source: The uploaded JPEG below: The data contain three sales categories' weekly revenue ( Delivery, Onsite, and take-out), the manager wants to k...
https://1drv.ms/x/s!AtJfo3-yWbHdgUuM3cgkxzhuzAnZ THAT IS EXCEL LINK TO ANSWER QUESTION . 9:35 PSY230_M2 Assignment_Spring2023-... A standardized visual working memory test has a population mean (u) o...
 . The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a mechanical golfer with a swing that is said to emulate the legendary champion, Byron Nelson. Ten rando...
 . Suppose a credit card company would like to determine if the type of credit card influences the payment status of a customer's account. The following table indicates the card type for 200 rando...
help please  . Plant height Suppose that the height of a particular plant is uniformly distributed between 20 cm and 40 cm. [104 | 0'02 | 0.00 ........ 1point 5§ FE- Why is the density of the unif...
 . A researcher would like to determine if the proportion of households without health insurance coverage differs with household income. Suppose the Heath Insurance following data were collected from...
      need your help with step by stepss. Exercise 3: Reading R Output and Comparing the Means (12 points) First, let's conduct a two-tailed test as the following: t. test (murder ~ higher edu, dat...
need your help with step by stepps  . Exercise 2: Hypothesis Generation (10 points) I'm creating two groups to compare by separating the states where the percent of high school graduates was above ...
  need you help with step by step    . 8 6 - count 4 2- 0 - 40 50 60 % High school graduates (1970). 40 50 60 % High school graduates (1970) 0.4 - 0.2 - 0.0 - -0.2 -0.4 - 40 50 60 % High school gra...
Is this correct . QUESTION 5 Note that this exercise replicates Section 5.3 in Stock and Watson, but with the MA data instead of CA data. Hence, it would be helpful to read the section once again. Ge...
The forward area of an aircraft has 2 lavatories. On average, passengers arrive to the lavatory every 8 minutes. If both lavatories are in use, the passenger is sent away - there is no waiting in the ...
Consolidated Corp. is a manufacturer that produces metal parts Recently it signed a contract to supply metal plates to an air conditioning manufacturer. The specifications require the length to be bet...
Larry Ellison starts a company that manufacturers high-end custom leather bags. He hires 3 employees. Each employee only begins working on a bag when a customer order has been received and then she ...
Edit: all of the tables and information needed are here, but there is a lot of calculation that needs to be done to answer this.    Hello,  I am going to attach documents to my question, but I ulti...
A researcher has discovered a new metal that she thinks can be used in batteries to extent battery life. She is well aware that the type of battery she is hoping to improve (the regular batteries ) la...
Consolidated Corp. is a manufacturer that produces metal parts Recently it signed a contract to supply metal plates to an air conditioning manufacturer. The specifications require the length to be bet...
 . Decide if the following statements are true or false. Justify your answer. a. A 97% confidence interval is more precise and therefore narrower than a 95% confidence interval. b. If 0 is a maximum ...
 . 5. A self-renewing space shuttle is launched on day at = 0. If the laimch fails. the shuttle is destroyed. Otherwise. the shuttle reaches outer space and explores it, except during periods of self...
 . 3. Consider a discrete—time Markov chain X0, X1, X2. . .. with set of states 5 = {1. 2} and transition probability matrix P Pm P12 0.03 0.07 _ Pal P22 _ 0.02 0.08 ' For example. X... = 1 indicat...
For the first few exercise assignments, you will be analyzing the outcome variable "sbp" and the independent variable will be "Group". Group represents different conditions to which participants were ...
Please help with this task! Please only do it in R-code ("R-studio-Rscript.")  Don't do it in any other code language.  . The probability density function of random variable X is f(x) = sin(x) 2 for...
1. For your first answer here, please explain how you search for and verify the truth of or at least credibility of information.  2. For your second answer, list a few methods you could use to mislea...
The Specific Absorption Rate (SAR) for a cell phone measures the amount of radio frequency (RF) energy absorbed by the user's body when using the handset. Every cell phone emits RF energy. Different p...
Also need critical value . Consider the hypothesis statement to the right. H0: 52 26.0 State your conclusion given that 5 =1.7, n =29, and ac= 0.05. H1: 62 < 6.0 5 Click the icon to View a table o...
 . A researcher would like to determine if the proportion of households without health insurance coverage differs with household income. Suppose the Heath Insurance following data were collected from...
 . Ex. 1: How many 6-digit even numbers over 300 000 can be formed using the digits 0-6 without repetition? Ex. 2: The score at half-time for a game is 6-3. How many different scores were possible af...
Find t test p value critical values. A/B testing is a testing method that businesses use to test different designs and formats of a web page to determine whether a new web page is more effective than ...
 For the student t distribution, the lower the degree of freedom, the fatter the tails. This exercise helps you visualize the fact. Using the rt command in R, simulate 10,000 observations from a stud...
ANOVA Single factor analysis using excel ONLY   Data source: ANOVA Excel  The data contain three sales categories' weekly revenue ( Delivery, Onsite, and take-out), the manager wants to know if ther...
 . (9 points) A = {1, 3, 5}, B = {2, 3}, and U = {1, 2, 3, 4, 5} Check ALL elements of the following sets: (a) AnB A. 1 OB. 4 OC. 5 OD. 3 OE. 2 (b) AUB O A. 3 OB. 1 OC. 4 OD. 2 OE. 5 (c) AnB' OA. 1 O...
Question 1:     Question 2:   A population has mean μ=21 and standard deviation σ=4. Round the answers to two decimal places as needed.   (b) Find the z -score for a population value of 24.   Q...
Inference about the difference between two population means - Independent samples, population standard deviation unknown Most consumers are not diamond experts, so many rely on an independent certific...
Please solve for A and B   . Consider a contingency table of observed frequencies with six rows and seven columns. - X a) How many chi-square degrees of freedom are associated with this table? b) Wh...
Can you please help?     Using SPSS: Take a random sample of 100. Calculate the 95% confidence interval for the variable. Calculate a 90% confidence interval. Take another random sample of 400. Calc...
Would you please help me understand, again about the same article that I uploaded previously the following points: 1. I am confused about Cronbach' Alpha as a measure of reliability and then alpha let...
j. A sample of 49 sudden infant death svndrome {SIDS} cases had a mean birth weight of 2998 g. Based on other births in the county, we will assume 0 = 800 g. Calculate the 95% confidence interval fort...
Inference about the difference between two population means - Independent samples, population standard deviation unknown Most consumers are not diamond experts, so many rely on an independent certific...
SO FAR WE GOT THIS FAR IN CLASS, MY PROFESSOR SAID "NOW WE NEED TO GET WEIGHTS AND DO THE NEXT PART WHICH IS THE NONPRE-EMPTIVE PART. PLEASE ANSWER THIS USING THIS FORMAT AND EXCEL SOLVER JUST LIKE I ...
 . Quiz navigation Question 7 To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 61 2 3 5 6 Tries remaining: specimens are buried in soil for a 2-year pe...
Buenas tarde agradeceria mucho su ayuda con este problema de estadistica. Problema:. Para satisfacer las necesidades de los clientes, un proveedor de seguros ofrece una amplia variedad de productos de...
One way to look at normal distribution is to think of the "bell shaped" curve. The peak of the curve tends to be the average or central point where most values fall. The extreme ends are outliers - so...
In a poll of 512 human resource​ professionals, 45.9​% said that body piercings and tattoos were big personal grooming red flags.   Construct a​ 99% confidence interval estimate of the proporti...
asap and clear answer hand written or typed correctly no AI. The amount of weight that the Elephant Hook@ is required to hold is random depending on what is hung on it. It has to hold at least it's ow...
  Inference about the difference between two population means - Independent samples, population standard deviation unknown Most consumers are not diamond experts, so many rely on an independent certi...
What research question could be created (regarding the topic of pre-diabetes) using the National Health and Nutrition Examination Survey 2015-2016 dataset that could be answered by multiple regression...
I need the R code for MAT 303 Module 4 project one, Codio Jupyter Notebook. R Script: To complete the tasks listed below, open the Project One Jupyter Notebook link in the Assignment Information modul...
A private college in Ohio wishes to determine whether or not students living on campus have similar GPA's to commuter students. They survey 120 resident students and find an average GPA of 2.82, with ...
Model: Sometimes we need to use combinations, permutations, or the Fundamental Counting Principle to calculate n(E) and n(S). For each of the following problems, use the following process: (a) Determi...
A random sample of 22 Midtown residents in Atlanta has been selected to be studied for their expenditure on theater tickets.  The mean of spending for this group is  $135  with a standard deviation...
2. Inferences about the difference between two population means - Independent samples, population standard deviations known Consider a pool of home mortgages. Prepayments of mortgages in the pool affe...
D Question 13 8 pts An Organizational Psychologist wants to know if attending a training session increases the productivity of workers. The mean productivity of workers in the population is u = 66 wit...
A company institutes an exercise break for its workers to see if this will improve job satisfaction, as measured by a questionnaire that was given to a random sample of workers to assess their satisfa...
Para probar una aseveración respecto de una desviación estándar o varianza poblacional se utiliza: A. La distribución de probabilidad Z B. La distribución de probabilidad T. C. La distribución C...
A sociologist determines that urban males score in the 30th percentile on a test of social awareness. The mean score of the entire sample is 200 with a standard deviation of 70. What is the score for ...
  Grouped Frequency Distributions Group A: (Width is 8) Intervals 93-100 6 85-92 6 77-84 6 69-76 1 61-68 2 53-60 0 45-52 2 37-44 0 29-36 0 21-28 1     Group B: (Width is 4) Intervals 97-100 1 93-96...
Pay your taxes: According to the Internal Revenue Service, the proportion of federal tax returns for which no tax was paid was p= 0.326 As part of a tax audit, tax officials draw a simple random sampl...
Please help. Plant height LE Suppose that the height of a particular plant is uniformly distributed between 20 cm and 40 cm. 0.06 | 0.04 l 0.02 | 0.00 l ........ 1point U Q l): What is the probability...
UCLA Registrar's office reported that the probability that a randomly chosen UCLA student is a California resident is 0.4.  Given that a randomly chosen UCLA student is a California resident, the pro...
 . A simple random sample of 8 employees of a corporation provided the following information. Employee 1 2 3 4 5 6 7 8 Age 21 37 24 41 48 52 25 22 Gender M M W M W W W M (a) Determine the point estim...
13.) 40.1​% of consumers believe that cash will be obsolete in the next 20 years. Assume that 7 consumers are randomly selected. Find the probability that fewer than 3 of the selected consumers beli...
Cal State Fullerton's department of Sociology is aiming to increase their ranking of their graduate studies program by being selective in their acceptance rate. The admissions committee is deciding th...
Test the null hypothesis at the .01 level of significance that the distribution of blood types for college students complies with the proportions described in the blood bank bulletin, namely, .44 for ...
Does background music influence the scores of college students on a reading comprehension test? Sets of 10 randomly selected students take a reading comprehension test with rock, country-western, or c...
Measures of central tendency summarize an entire data set with one number. A common measure of central tendency for quantitative data is the mean.  Patients with a total joint replacement of the hip ...
  A social psychologist wishes to test the assertion that our attitude toward other people tends to reflect our perception of their attitude toward us. A randomly selected member of each of 12 couple...
5.  Include a graph comparing and contrasting two  observations from the coding data provided. A. Explain your observations from part 5.  . Coding Life Cycle: Electronic Health Records (Post-Implem...
  A group of high-risk automobile drivers (with three moving violations in one year) are required, according to random assignment, either to attend a traffic school or to perform supervised volunteer...
Instructions:  • Create  R markdown file to include your answers to all the questions, together with all necessary R codes and outputs. [Use "block quote" to include any of your typed answers by s...
Please answer both parts of this problem :)  . 1. In a Randomized Complete Block design with 3 machines (treatments) and 5 workers (blocks) the summary statistics in usual notations are as follows: y...
The overall in-hospital mortality was 8% in one research setting. For patients with qSOFA scores less than 2, the mortality rate was 3% (95% CI, 2%-5%) vs 24% (95% CI, 18%-30%) for patients with a qSO...
You haven't been getting much sleep lately and want to see how you compare to the average student at your university. You plan to sample students and ask them how many hours they sleep per night. Then...
 . Exercise 2-17 {Algal (L02-3] The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting Inc. during the...
asap and nogpt. (4 points) A recent poll of 2200 randomly selected 18-25-year-olds revealed that 255 currently use marijuana or hashish. According to a publication, 12.7 % of 18-25-year-olds were curr...
 . When estimating a population mean, you must use t procedures rather than normal curve procedures when: A. the population standard deviation and the sample standard deviation are different. O B. th...
 . 1. Let X" denote the mean of a random sample of size n from a N(u,oz) distribution. Find the distribution of X', and then compute the probability that the random interval (X' — Zo/fl, ...
Consider the following probability distribution for a random variable  X .  . Consider the following probability distribution for a random variable X. X 2 6 12 p(x) 0.11 0.68 ? where the question ma...
Consider the following output from R's t.test procedure, involving a two-sample problem where each group had the same sample size. Two Sample t-test data: Group1 and Group2 t = -1.3577, df = 198, p-va...
Homework Assignment 16:   You are the agent for a baseball player who desires an incentive contract that will pay the following amounts:                               Type of hit    ...
Reference: Grinstead & Snell Introduction to Probability , Sections 3.1 and 3.2.. 1 Four people are to be arranged in a row to have their picture taken. In how many ways can this be done? 5 There ...
Consider the following output for a one-sample procedure from R's t.test.     One Sample t-test data:  data t = -12.707, df = 39, p-value = 1.921e-15 alternative hypothesis: true mean is not equal ...
Suppose researchers are about to draw a sample of 1340 observations from a normally distributed population, and use this data to bulid a confidence interval for the population mean using the t procedu...
Researchers used the t procedure to find a confidence interval for the population mean of a normally distributed population, and found a 95% confidence interval of (214.7,382.4).  If they were to car...
 . Using a data set containing information from a random sample of students at Eastern Michigan University [EM U). Many variables were recorded' including the following: - Year: The current academi...
Suppose it has been claimed that the proportion of people in a certain population who carry a certain genetic marker is 0.30.  A researcher wishes to investigate this claim.  They draw a large sampl...
 . Suppose that 64% of all Ann Arbor adults went out for breakfast once a month before the pandemic. We want to assess if, among all Ann Arbor adults, the proportion who go out for breakfast once a m...
 . Can a certain swimsuit make a swimmer perform better? A study tested whether wearing a wetsuit influences swimming velocity using a random sample of 32 competitive swimmers who swam 1500 meters at...
 . Exercise 10.29 (Self-Test) Algorithmic eBook Video Consider the hypothesis test below. Ho : P1 - P2 < 0 Ha : P1 - P2 > 0 The following results are for independent samples taken from the two ...
Match the scenario with the proper selection method   a. Experimental units need to be assigned to a group in an unbiased manner (assume large test pool)   Randomization,  MarketMatching or MatchIt...
A supermarket company is testing two different versions of an end-of-aisle (endcap) display.  You notice that besides the displays, there are difference between the two groups in terms of where the e...
Answer question 1 and 2 part A and B.. 1 / 2 100% 1. In a corporation, there are 200 male employees and 250 female employees. 20 percent of the male employees have an advanced degree and 30 percent of...
A college claims that the proportion,p, of students who commute more than fifteen miles to school is less than 15%. A researcher wants to test this. A random sample of 275 students at this college is ...
 . Exercise 10.41 Question 12 of 14 Check My Work eBook The National Association of Home Builders provided data on the cost of the most popular home remodeling projects. Sample data on cost in thousa...
Link to coin flip: https://iupbsapps.shinyapps.io/coin-sampling/ Link to matching:  https://iupbsapps.shinyapps.io/match-sampling-2/. 1. A group of researchers is interested in the ability to infer w...
Suppose that a random sample of  17 recently sold houses in a certain city has a mean sales price of $ 300,000, with a standard deviation of $10,000. Under the assumption that house prices are normal...
   . (8 marks) (c) Based on the selected decision tree in (b), discuss the rules that are associated with patients who suffered from stroke. (9 marks) (d) Based on the rules discussed in (c), apprai...
Hello tutor, could you please help in answering the following questions. Thank you       . Question 6 (0.5 points) State Or/ 2, the confidence coefficient, to 2 decimal places. Your Answer: Answer...
A) write out and complete each step of the hypothesis testing procedure.  The research question is - Is the ability to care for a vascular device upon discharge affected by gender? ability to care fo...
 . For the sake of keeping hean of sample means equal 246.618 115, which was call of sample means will be the point estimate we use to calculate a confidence interval of the typical length of a 1980'...
Identify t statistic Identify p- value. Listed below are systolic blood pressure measurements (mm Hg) taken from the right and left arms of the same woman. Assume that the paired sample data is a simp...
What would the Gamma and Chi-square be in this crosstab?  . Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent PARTY24E How often do 150 2 1.3% 152 100.0% you party? * FR...
What is the Lambda and Chi-Square?. Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent COPE How do you usually 152 cope with stress? * MAJOR 100.0% 0.0% 152 100.0% What is...
The cumulatice funtion F(x) of the continuous random variable X is defined as follows. A) specify constants a, b and c. In the picture the word "kun" means when.. 1. Maaritellaan jatkuvan satunnaismuu...
 . 5. Past experience indicates that the time required for high school seniors to complete a standardized test is a normal random variable with a standard deviation of o = 6 minutes. A recent random ...
 . 4. Suppose a coin is tossed 100 times and 35 heads are observed. Let p be the true probability of a head. (a) (3 points) Find the sample proportion of heads. (b) (3 points) Find the standard error...
 . 2. Let X1, ..., Xn be a random sample from the Unif(2, 8) distribution and let, X = n ', X; be the sample mean, where the sample size n = 48. (a) (2 points) Find E(X;). (b) (2 points) Find Var(X;)...
 . 1. True or False. The following questions pertain to the properties of the standard normal distribution. (a) (3 points) The distribution is bell-shaped and symmetric about 1. True False (b) (3 poi...
probability (combinations) Hint: answer must be in simplified fraction. A city council consists of four Democrats and four Republicans. If a committee of six people is selected then find the probabili...