Statistics and Probability questions and answers in March 2023 — Page 4

Paraphrase the following direct quotations:   "the difficulty lies first in becoming aware of these assumptions and beliefs and second in deciding whether we will actively incorporate them into our q...
Please review the info and kindly answer questions:  . QUESTION 4 Read the following case and answer ALL questions that follow. Many management decision theories tend to highlight the role of uncerta...
1. Calculate the area of a triangular shaped courtyard that needs flooring with a base length of 18 m and height of 9 m.   2. Calculate the area and volume of the cylinder with a radius of 2 m and a ...
           . 1c (5 points) (c) (5 marks) Of 30 randomly selected ridings, find the probability that less than 35% of the sampled ridings had fewer than 48,000 votes cast. Check all necessary con...
For this question i provide the correct answer but i dont understand the part whcih I have highlighted can you tell me why is 1-...to calculate the f0    . 2. Specify the classes, and determine whet...
 . Question 5 of 6 > This test: 100 point(s) possible This question: 15 point(s) possible Submi In a study conducted by a credit card company, corporate clients were surveyed to determine the exte...
need computations and visualization in R  . 5. (5pt each) Consider the Monthly Federal Reserve Board Production Index data prodn (from library astsa). (a) Fit the model using first-order differenced ...
Hello! May I ask for assistance regarding the below problem please? I have provided 2 screenshots below. I really appreciate your help!. {d} Assume that a student has not attended class and has not do...
Identify relationships, For each of the six plots, identify the strength of the relationship (e.g. weak, moderate, or strong) in the data and whether fitting a linear model would be reasonable.     ...
3. The probability that a randomly selected 40-year-old male will live to be 41 years old is 0.99757, according to the National Vital Statistics Report, Vol, 56, No. 9. What is the probability that tw...
A data set includes 103 body temperatures of healthy adult humans having a mean of 98.9 F and a standard deviation of 0.67 F. Construct a 99% confidence interval estimate of the mean body temperature ...
7.26 Antibiotic consumption, Part II. Antibiotic consumption, Part II. Exercise 7.22 introduced a study conducted about antibiotic consumption in China. One aim of the study was to develop a predictio...
 . 7. Last month, the National Association of Theater Managers conducted a survey of 500 randomly selected adults. The survey asked respondents their age and the number of times they saw a movie in a...
Suppose we test the following hypotheses with a .05 level of significance Ho: p≥.44 Ha: p<.44 and compute the p-value to be .0237.  What conclusions should we make? Group of answer choices a.Rej...
A simple random sample of 31 observations was taken from a large population that has a mean of 4.9 and a standard deviation of 1.02.  From the sample, the average was calculated to be 5.3 and the sta...
Samples of cream from each of 10 dairies (A to J) are each divided into two portions. One portion from each is sent to Labratory I and the other to Labratory II, for bacterium counts. The counts (thou...
On the day of the third round of the Open Golf Championship in 1987 before play stated a television commentator said that conditions were such that the average scores of players were likely to be at l...
Marketing research assignment https://docs.google.com/spreadsheets/d/1IBS0T8CeaCImjkCOnYuZsX1BynqiIKsW/edit?usp=sharing&ouid=105216892216633736978&rtpof=true&sd=true    . TASK: Intereste...
 . Why 1would a decision maker decide to take a sample instead of a census? O Most business people would rather haye statistics than parameters when making decisions. 0 A census only looks at a porti...
 . 2. 12 randomly selected volunteers drank a randomly assigned number of cans of beer. Thirty minutes later a police officer measured their blood alcohol content (BAC) in grams of alcohol per decili...
Acrylic bone cement is sometimes used in hip and knee replacements to fix an artificial joint in place. The force required to break an acrylic bone cement bond was measured for n = 33 specimens under ...
At issue is the proportion of people in a particular county who do not have health care insurance coverage.  A simple random sample of 250 people were asked if they have insurance coverage and 85 rep...
A statistic that is an estimate of the spread in the individuals in a population of interest is Group of answer choices a.the estimated standard error. b.the population standard deviation. c.the sampl...
The following data represent the number of days absent per year in a population of six employees of a small company:                               1 3 6 7 9 10   a. Assum...
I need help with these three questions . Half-life of a radio active substance has the formula G(t) = mo . 2 a, where G(t) is the amount of material remaining after t minutes and a is the half-life o...
The National Center for Health Statistics (NCHS) reports that 70% of U.S. adults aged 65 and over have ever received a pneumococcal vaccination. Suppose that you obtain an independent sample of 20 adu...
 . Here are summary statistics for randomly selected weights of newborn girls: n = 36, x = 3222.2 g, s = 686.7 g. Use a confidence level of 90% to complete parts (a) through (d) below. . . . a. Ident...
United Express Service (UES) uses large quantities of packaging materials at its four distribution hubs. After screening potential suppliers, UES identified six vendors that can provide packaging mate...
The following probability model shows the number of arrivals at an emergency room between midnight and 6:00 am .What should the value be in the missing cell?   X P(X) 21 0.30 22 0.25 23 0.20 24 0.20 ...
Consider a random variable with the following pmf: f(x)=c(1 / 2^x), for x=0,1,2,3. (a) Find c so that f(x) represents a valid probability distribution. (b) Find μ = E(X). (c) Find σ2 = Var(X). (d) F...
 . MyStatLab 16. For each of the following experiments, decide whether the difference between conditions is statistically significant at the .05 level (two-tailed). The t Test for Independent Means 3...
Use the accompanying radiation levels in Wkg for 50 different cell phones. Find the percentile P60.   0.23   0.25   0.30   0.50   0.56   0.57   0.61   0.62   0.75   0.81         0.87  ...
 . 7. Calculate the missing values A - H (Show all work). Note the correct answer for (A) is either "unequal" or "equal." Two-sample t test with A variances Obs Mean Std. Err. Std...
 . 5. In a study conducted in Italy, 10 patients with hypertriglyceridemia were placed on a low-fat, high-carbohydrate diet. Before the start of the diet, cholesterol and triglyceride measurements we...
Q9 pls help. If the correlation between height and weight of a large group of people is 0.68, find the coefficient of determination (as a percent) and explain what it means. Assume that height is the ...
A sample of 500 residents in a town were surveyed by the city council, and they found that 75% of residence wanted to raise taxes to support the arts in public schools.  1) What is the standard error...
Interpret confidence intervals and explain the conclusions from hypothesis tests. For all hypothesis tests, clearly state the null and alternative hypotheses, the significance level, the test statisti...
      Question 1 of 171.0 Points What is the critical values of Z if the test is a two-tailed test with α = .05?    A. 1.64 and -1.64  B. 1.96 and -1.96  C. 2.33 and -2.33  D. 2.58 and -2.58...
A sample of 500 residents in a town were surveyed by the city council, and they found that 75% of residence wanted to raise taxes to support the arts in public schools.  1) What is the standard error...
 . Dependent Question 3, 9.3.12 HW Score: 65%, 6.5 of 10 airs) Part 2 of 4 points Ip Points: 0.5 of 1 Save K Researchers collected data on the numbers of hospital admissions resulting from motor vehi...
The probability of a single engine failing on a jet is 1/14000. Use this probability to determine the binomial probabilities of 0, 1, 2 and 3 engines failing on a 3-engine jet (there will be 4 separat...
Question 5 (1 point) The marketing manager of a large supern ketch Fuld like to use shelf space to predict the sales of pet food. For a sample pres. she gathered the following information regarding th...
 . A box has 19 candies in it: 2 are peppermint, 7 are butterscotch, and 10 are caramel. (Each candy falls into only one of these categories.) Justin wants to select two candies to eat for dessert. T...
The mean yearly rainfall in Sydney, Australia, is about 137 mm and the standard deviation is about 69 mm. Assume yearly rainfall is normally distributed. Round the probabilities to four decimal places...
1. Sam wants to estimate how many students prefer Chick-Fil-A as their favorite fast-food restaurant.  Based on a sample of 212 students, 145 identify Chick-Fil-A as their favorite fast food restaura...
What are the definitions for each? What might be an example you can think of (or google) when each might be used? When might it be beneficial to use one choice versus another?   REPRESENTATIVE SAMPLE...
Dr. Wallace conducted a large-scale study by computing the average GPA of Health Sciences students and comparing it with the average GPA of Medical students from 300 universities in California. He als...
In the past decades, there have been intensive antismoking campaigns sponsored by both federal and private agencies. In one study of national smoking trends, two random samples of U.S. adults were sel...
  DATA Temp 96.3 96.6 97 96.9 97.1 97.1 97.1 97.1 97.2 97.4 97.4 97.4 97.5 97.6 97.5 97.7 97.6 97.6 97.7 97.8 97.8 97.8 97.8 97.9 97.9 98 98.1 97.9 97.9 98 98.1 98.1 98.1 98.1 98.3 98.1 98.3 98.4 98....
 . myOpenMath Progress saved Done & Vo- . Question 1 Background: Henry Cavendish carried out a series of experiments in 1798 to determine the mean density of the earth, as an indirect means to ca...
A candidate for one of Ohio's two U.S. Senate seats wishes to compare her support among registered voters in the northern half of the state with her support among registered voters in the southern hal...
Which one is correct show work. Convert the given i-system to an e-system using slack variables. Then construct a table of all basic solutions of the e-system. For each basic solution, indicated wheth...
 . Exercise 3 (1.5 pt) Consider the following statistic as a possible estimator of o2. 1 n E(Xi - X)2 n i=1 When X is normally distributed, this is the MLE for X. However, it's a biased statistic. Ca...
 . Exercise 1 Let X1, X2, ..., Xn be a random sample from the distribution with probability density function f (ac) = xat1, ">2 ,a>0 a. (1 pt) Find the Maximum Likelihood Estimator (MLE) f...
Suppose that the annual rate of return for a common biotechnology stock is normally distributed with a mean of  6.5 % and a standard deviation of 4% . Find the probability that the one-year return...
if you conducted a Research to find out: How has the miles per gallon (MPG) to car pound ratio changed from 1970-1980? What would be your research hypotheses Statement of your null and alternative hyp...
Looking at model 3 , what is the association between "Whole grain", "Refined grain" and "Total grain", respectively, and ischemic heart disease, comparing the results of quintile 5 versus quintile 1? ...
 . Astandardizecl test has a scale that ranges from 3 to 45. A new type of review course for the test was developed by a training company. The accompanying table shows the scores for nine students be...
Question e. Save parts (a) through (1) The reading speed of second grade students in a large city is approximately normal, with a mean of 90 words per minute (wpm) and a standard deviation of 10 wpm. ...
I NEED IMMEDIATE HELP WITH THIS QUESTION. I will upvote  MSIS 212. Question 4 29 Points Minimax etc There are two outcomes: a good market and a bad market. , The decision table is presented below. Th...
 . Calculate the appropriate test statistic. The test statistic is (Round to two decimal places as needed.) Determine the appropriate critical value(s). The critical value(s) is(are). (Round to three...
The city of Raleigh has 8400 registered voters. There are two candidates for city council in an upcoming election: Brown and Feliz. The day before the election, a telephone poll of 250 randomly select...
 . LJ Question 2 2 pts The probability that four randomly selected registered voters in the US all DO NOT disapprove of the job that Congress is doing is which of the following? 0 (0.23m o (0.77M 0 (...
Q13. A recent poll asked respondents to fill in the blank to this question: "The country when it comes to giving equal rights to women" with one of three choices. The results are shown in th...
A hospital in a large city records the weight of every infant born at the hospital. The distribution of weights is normally distributed, with a mean µ = 2.9 kilograms and a standard deviation σ = 0....
The formula for the standard deviation of a sample is: s space equals space square root of fraction numerator 1 over denominator n minus 1 end fraction sum from i equals 1 to n of left parenthesis X s...
Part 1 of 4 O Points: 0 of 1 The accompanying table describes the random variable x, the numbers of adults in groups of five who reported sleepwalking. Complete parts (a) through (d) below. Click the ...
                                           . Safari File Edit View History Bookmarks Window Help 92% O Sun 7:02 PM Aleyda Shockey QE . . . < > Q V mylab.pearson.com 898 4 O...
19. The life expectancy of a particular brand of light bulb is normally distributed with a mean of
1500 hours and a standard deviation of 75 hours. a. What is the probability that a light bulb will ...
Provide quadratic regression statistics using the information on the graph below. Use quadratic linear regression     . Regression Statistics Multiple R R Square Adjusted R Square Standard Error Ob...
You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg): ̄y s  before medication: 178 111 142 134 15...
What Methodology would be used for this study? Specify the linear regression model you plan to use. Specify any sensitivity analysis you plan to perform (or, if not appropriate, why not) We would like...
I don't need long explanations                    . Find the critical value 20% that corresponds to the confidence level 87%. —<Z>— Question 1 Zoo'2 = D (Round to two decimal pl...
There is the problem and 2nd picture is answer I just dont understand why they have a p~ transition matrix like that can you explain why we need to change the 3rd row like 001 i dont understand    ....
(B) find the .... (d) Write the conditional distribution of sex (e) Does there appear to be an association between sex and whether they wear glasses or not. pls answer b , d and e. 21. The principal o...
19. The life expectancy of a particular brand of light bulb is normally distributed with a mean of
1500 hours and a standard deviation of 75 hours. a. What is the probability that a light bulb will ...
14. What percent of humans have a pregnancy lasting less than 257 days?    What percent of humans have a pregnancy lasting longer than 280 days?    What percent of humans have a pregnancy lasting ...
Please answer the questions provided.  This is all the information given. 6:19 PM Sun Mar 26 ?93%-' i lms.brocku.ca BS You hear that a report that university students are less depressed than other ...
In your words, explain the difference between simple random sampling and convenience sampling. Discuss the advantages and disadvantages of simple random sampling and convenience sampling. Is convenien...
What is the least desirable form of validity?  (i.e., what is the lamest type of validity, which is sometimes a bad thing to have?) Measurements are ______ if scores are consistent and stable. If the...
If the entire spectrum/universe of a construct or variable is measured reliably by a questionnaire, the questionnaire has ___________ validity. Stability across time of a questionnaire or other measur...
A department store in Sochi, Russia, has arranged to purchase specially designed sweatshirts with the Olympic logo from a clothing manufacturer in Hong Kong. When the sweatshirts arrive in Sochi in lo...
Please find attached . < Question 9 of 9 This quiz: 21 point(s) possible This question: 3 point(s) possible Submit quiz The data on the right represent the number of traffic Female Male Total fata...
   Please answer    . 6:19 PM Sun Mar 26 ?93%-- E lms.brocku.ca J B7. You have a hypothesis that being well rested is the key to athletic performance. To test this hypothesis you ask all 57 speed ...
How does the Barthel 1 score differ between men and women?  My answer:  An independent samples t-test was conducted to determine if there was a difference between the Barthel Index (BI) scores for m...
 . Last year, 48% of business owners gave a holiday gift to their employees. A survey of business owners conducted this year indicates that 32% planned to provide a holiday gift to their employees. S...
I just need help with part C please. Thanks!. A paper describes an investigation in which 40 men and 40 women with online dating profiles agreed to participate in a study. Each participant's height (i...
 . At the a = 0.1 level of significance, what is your conclusion? O You can reject the null hypothesis; caffeine does appear to affect test performance. You can reject the null hypothesis; you do not...
 . A cost accountant is developing a regression model to predict the total cost of producing a batch of car seats as a linear function of batch size (the number of seats produced in one lot or batch)...
 . Done < AA myopenmath.com C Homework: Section 7.3 (Using the Central Limit Theorem) Progress saved Done Vo. . . . Score: 0/3 0/3 answered Question 1 0/1 pt 9 2 98 0 Details A normal distributed ...
2 During elections, honesty of the politicians is one of the most important factors impacting voters' decision. A researcher is curious if voters in Pennsylvania, New Jersey, and North Carolina think ...
 . 2.35 Chernoff bound for Gaussian and Poisson random variables (a) Let X have the N (,LL, 02) distribution. Find the optimized Chernoff bound on P{X 2 E[X] —|— c} for c 2 0. (b) Let Y have the ...
 . 2.23 On the growth of the maximum of n independent exponentials Suppose that X1, X2, ... are independent random variables, each with the exponential dis- tribution with parameter 1 = 1. For n >...
 . 2.21 Sums of i.i.d. random variables, Ill Fix > > 0. For each integer n > 1, let X1,n, X2,n, . .., Xn,n be independent random variables such that PIXin 1] = X/n and P{Xin = 0} = 1 - (X/n)...
o. E O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING 0/3 Determining null and alternative hypotheses for a test of a... Last year's mean hourly wage (in dollars) for all hospital clerical workers in a l...
How to solve. At one university, the mean distance commuted to campus by students is 17.0 miles, with a standard deviation of 5.3 miles. Suppose that the commute distances are normally distributed. Co...
1) For each research scenario below, indicate: which hypothesis test (z-score test, one-sample t-test, chi square goodness of fit test, chi square test for independence) should be used to analyze the ...
 . Housing prices in a small town are normally distributed with a mean of $154,000 and a standard deviation of $7,000. Use the empirical rule to complete the following statement. Approximately 68% of...
Saeko owns a yarn shop and want to expands her color selection.             Before she expands her colors, she wants to find out if her customers prefer one brand         over another brand....
In a certain city, the average 20- to 29-year old man is 72.5 inches tall, with a standard deviation of 3.0 inches, while the average 20-to 29-year old woman is 64.3 inches tall, with a standard devia...
True or False? Salma believes the majority of her neighbors are unhappy with her building management's new rules to forbid pets in the building. She goes doors to door and asks them to fill her survey...
Use the IQ variables  92.00,  84.00, 131.00, 104.00, 83.00, 84.00, 85.00, 110.00, 121.00, 120.00  , in the Howell Excel Data Set and transform the x values into z-scores using the μ = 90 with σ =...
 . Estimation for Difference 95% Cl for Difference Difference 2.30 (0.24, 4.36) Test Null hypothesis Hoi H1 - H= = Alternative hypothesis H1: Hi - H= = 0 T-Value DF P-Value 2.23 62 0.030 here to sear...
 . Review Part A - Magnitude of the applied force Learning Goal: To be able to analyze systems in equilibrium in the presence of friction. If the dresser is sliding with a constant velocity, find F, ...
Please Help:  The bar graph illustrates the classifcation of established epilepsies. n number. # Other drugs include intoxication with gamma-hydroxybutric acid and withdrawal of benzodiazepines. *Thi...
Dr. Bill Board designs a 2 X 2 between-subjects factorial design, where Factor A is word frequency (low or high) and Factor B is category cues (no cues or cues). Assume that the data are interval. Wha...
Suppose your R-square value is equal to 0.681. How would you interpret this value in the context of the scores? Suppose your R-square value is equal to 0.681. How would you interpret this value in the...
Hello tutor, could you please help in answering the following questions that is incorrect and unfilled.   . 3. [3/6 Points] DETAILS PREVIOUS ANSWERS DATAfile: CorporateBonds You may need to use the ...
 . A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 90% confident that the sample mean is correct t...
What type   of graph or table did you choose for your lab (bar graph, histogram, stem & leaf plot, etc.)? What characteristics make it this type (you should bring in material that you learned in ...
 . Question 2.2: Exponential Families and Losses (5 Points) Let f(x; w) = w x with weights w e R". Let us define a conditional random variable using a 1-dimensional exponential family, such that...
 . Question 1.2: Approximating the MAP (2 Points) Consider a posterior distribution Pr"? | D] supported on 9 and N i.i.d. samples {19g E GHLI from it. Define the sample mean as i 21:19? 1. For wha...
1. Interpret the confidence interval you computed above by completing the following sentence. "I am 95% confident that the..(Include the words "Population" and "mean" 2. Briefly explain the implicatio...
Hi, today I am writing up the answer to my independent samples t -test.  This is what I have so far...   A paired samples t -test was conducted to determine if scores obtained on the Barthel Index 1...
Please review info and answer questions that follow:  . QUESTION 5 Study the case and statistical output below and answer the questions that follow: Employees' turnover is a global concern, which if ...
Please review the info and answer all questions:  . QUESTION 3 Study the caselet below and answer all questions in this section. An investment analyst is conducting a study with the aim of examining ...
Please review the info and kindly assist with answering the questions that follow:  . Answer ALL the questions in this section. QUESTION 1 Study the extract below and on the basis of the requirements...
f the weight assumptions were revised so that the new capacity became 20 passengers and the gondola is filled with 20 randomly selected​ skiers, what is the probability that their mean weight exceed...
1. Coaching for standardized exam Test-preparation organizations like Kaplan, Princeton Review, etc. often advertise their services by claiming that students gain an average of 100 or more points on t...
Is the following p value significant or not significant? Use the critical value of a = .05. Select the correct answer to the question. p = .01   1) significant/reject null 2) Not significant/fail to ...
Power calculations   Investigators plan to use a sample of size 60 to carry out tests of hypotheses with the null hypothesis µ = 250 .  They think the population standard deviation is equal to 50 ....
[A-Q1] Farmer Bob runs a pig farm and currently has as many male pigs as female pigs.  Farmer Sue decides to buy two pigs from Bob and sends her son to pick them up, who just randomly grabs two pigs ...
Student Sex Conscientiousness GPA Hours Worked Per Week 1 Female 51 3.20 35 2 Female 50 3.20 25 3 Female 54 3.00 32 4 Male 36 3.00 22 5 Male 44 3.75 16 6 Female 36 2.20 0 7 Female 52 3.50 0 8 Male 48 ...
 . d) Complete the table below and group the classes, if applicable. (Difference)^2 / Frequencys Frequencys Difference Frequencys theoriques observees theoriques e) Calculate the experimental value o...
 . 2. (f-divergences) This problem introduces several examples of f-divergences and inequalities be- tween them. Let P and Q be probability distributions on a space ) such that P is absolutely contin...
 . Normal Probabilities 6.10 A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a Common Data standard deviation of 8. Mean Standard...
Answer and explain please. 3. Figure 1 shows the average rates of inflation and money growth for various decades in the U.S. Assuming the quantity theory of money is correct, determine the rate of out...
Answer and explain please. 2. Say the velocity of money is constant and real GDP grows by 5% per annum. If the Central Bank keeps the money supply constant, you can tell me that: (a) Both nominal GDP ...
Answer and explain please. 1. Say the velocity of money is constant, real GDP grows by 5% per annum, the money supply grows by 14% per annum, and the nominal interest rate is 11%. The real interest ra...
Question 1:   Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 72 and a standard deviation of 7. Use the TI-84 PLUS calculator to answer the followi...
 . nit Theorem - Google Chrome erHomework.aspx?homeworkld=642320768&questionld=10&flushed=false&cld =7274285&centerwin=yes Kristiana Stewart 03/26/23 11:16 AM tistics Spring 2023 (CRN...
Question 1:   Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 72 and a standard deviation of 7. Use the TI-84 PLUS calculator to answer the followi...
Please answer the questions after reading the case study  . Figure 5.1: Case Processing Summary Cases Valid Missing Total Hospitals N Percent N Percent N Percent Employee_satisfaction_score Johannesb...
Time that is needed to fix a car engine problem follows a normal distribution with mean of 48 and std of 5 minutes. A mechanics tells a customer that it takes maximum of 1 hour to fix the engine. a. W...
You and some friends have decided to test the validity of an advertisement by a local pizza restaurant, which says it delivers to the dormitories faster than local branch of a national chain. Both the...
Please do it by hand - you will need to do so on the exam also. Use of calculator OK - it will be permitted on the exam. Customer 1 2 3 4 5 6 7 8 9 Spending 96 75 84 89 95 73 59 82 115 (a) Calculate t...
 . Below is a histogram output (Figure 1). What percentage of the items purchased were between $4.99 and $9.99? Price Categories Frequency Cumulative % 4.99 179 27.54% 9.99 201 58.46% 19.99 86 71.69%...
Note: Please include both R codes and results in your report. (You may use the "Compile Report" function under Menu "File" in RStudio to generate a Word/PDF report)     Question : Compare Groups (30...
Note: Please include both R codes and results in your report. (You may use the "Compile Report" function under Menu "File" in RStudio to generate a Word/PDF report)   Question : Compare Groups (40 po...
 . Question 11 (1 point) 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...
Note: Please include both R codes and results in your report. (You may use the "Compile Report" function under Menu "File" in RStudio to generate a Word/PDF report) Question : Correlation (30 points) ...
There are 21,622 students including 16,702 undergraduate and 4,920 graduate students at University of Memphis for academic year 2021-2022. By attending status, there are 13,397 full-time and 8,225 par...
I need the full procedure in Excel, step by step how to construct the answer and the formulas used in Excel. I'm trying to learn how to do this.   Examine the provided data. We are working with a res...
 . Price of Gasoline The average retail price of gasoline (all types) for the first halls of 2005 was 212.2 cents. What would the standard deviation have to be in order for a 15% probability that a g...
Can you tell me how to re-product the following table? Using R code such as  below "•Type I <- c(45, 25)  # Creating first Row •Type II <- c(35, 15 )  # Creating second Row •Data <- ...
I wanted to see if listening to music daily has an impact on stress levels. I used a PSS (perceived stress scale) and also asked participants how many days a month they listen to music. I have raw dat...
The sample variance matrix of the factor scores in Exploratory Factor Analysis (EFA) is equal to an identity matrix? If not, explain why.    Please use below two hints to explain why:  > The fac...
OPTION A 27 IS WRONG. WHICH OPTION IS CORRECT?. A manufacturer of automobile transmissions uses three different processes. Management ordered a study of the production costs to see if there is a diffe...
Help me get the Q function value Here is the reference to the Q function:    . HW8.2. Betting with central limit theorem For both parts of the problem, be careful about your rounding, e.g., 3.96 sho...
which option is the correct one, 14 is wrong. The college of business was interested in comparing the interaction of academic status and class time on class attendance. Three different classes were sa...
 . HW8.3. Truncated gaussian Let X be a random variable with pdf fx(u) = T, (27) 1/211 aye (2-17)./242 for 28 Su S 44.5 and 0 otherwise. The scale factor K can be derived as: 1 K = - Q(a) - Q(b) Find...
If a bank assigns 8-digit account numbers to all of its customers, how many possible account numbers are there? (Note that digits can be range from 0 to 9.) A. 64 B. 64,000 C. 56,000,000 D. 100,000,00...
If 10,000 students take a standardized test, which type of graph would be most helpful for understanding the data?  A. A pie chart.  B. A histogram.  C. A scatterplot.  D. A line graph.  E. None ...
how to use r code to implement this?. In the following, all backtests (simulation of portfolios) must be done using btest () which was introduced in the class. You may use all codes and tools introduc...
Surveys are often conducted on the trends in digital platforms. The frequency table below summarizes the number of working computers in household for a simple random sample of 19 households. Find the ...
 . A simple sampling method adopted by many of the standard math libraries is the inverse probability transform: draw u ~ Unif (0, 1), then draw x ~ F-1(u), where F-1 is the inverse of the cdf. Show ...
For this question, " multiple correspondence analysis " means correspondence analysis with more than two variables.    a) What optimization does the j−th factor score in multiple correspondence an...
(4 points (bonus)) Consider the relationship between Sex and Discount.(Marks will only be awarded for carefully thought through explanations that invoke ADM2303 termi- nology, and no credit will be aw...
B question . The reading speed of second grade students in a large city is approximately normal, with a mean of 90 words per minute (wpm) and a standard deviation of 10 wpm. Complete parts (a) throug...
 . ID P(x) = .' A' / x1 2. a what hi the probability of having caactiv 7 customer sinking in an hour? Me - Formula Fro. Cumulative I bj what h the probability that lain than 10 customer wil arrive in...
Table 1   Intelligence Quotient   IQ Norm Distribution Z-scores   55        0.0028 -2.0588   82        0.0210 -0.4706   84        0.0221 -0.3529   93        0.0231   0.1765   9...
Week 3 Lab Assignment   Please use this template to help answer the questions listed in the lab instructions. The "parts" below refer to the parts listed in the lab instructions.  Type answers and ...
Question 1:   Exam grades: Scores on a statistics final in a large class were normally distributed with a mean of 72 and a standard deviation of 7. Use the TI-84 PLUS calculator to answer the followi...
Fully Interpret each table and chart Output from Spss. Parallels Client File E Applications Sessions View Window Help A $ 0 7 Q 8 0 Sat 25 Mar 23:36:57 *Output1.spv [Document2] - IBM SPSS Statistics V...
 . A little over 40% of the hospitals in this database had no births during the year for which the data were collected. Of the hospitals that did have births, the numbers varied from 1 birth to over ...
Question 4 options: If random variable X has a binomial distribution with n =10 and P(success) =p =0.2, find the probability that X is less than 6. (That is, find P(X<6) Answer: (round to 4 decimal...
Is Fast Food Messing With Your Hormones? Examine the results of a study investigating whether fast food consumption increases one's concentration of phthalates, an ingredient in plastics which has bee...
Extensive data collected during the first half of this century showed clearly that in those years, American-born Japanese childern grew faster than did Japanese-born children. A research paper conject...
In the G*Power software I have the Power (1-beta err prob) as 0.9. My question is after I computed everything and I am writing the results in my paper and I have to calculate the confidence interval p...
Statistics Exercise V: Correlation and Regression   Unless otherwise stated, use 5% (.05) as your alpha level (cutoff for statistical significance). #1.   What information does a correlation coeffi...
 Age, Sex (1 = Male; 2 = Female), Self-Esteem, Assertiveness, Healthy Lifestyle, and Emotional Intelligence for 60 students. Obtain the hypotheses at α = .05 and answer the follow questions using SP...
 . Question 6 of 7 4.5/6 View Policies Show Attempt History Current Attempt in Progress Use the t-distribution and the given sample results to complete the test of the given hypotheses. Assume the re...
 . 4. [ GRADUATE SECTION ONLY ] Consider this nonlinear model for the regression of dependent variable Y > 0 on independent variable X > 0: Y = ,7 - X51 s (3) Here, a" is (unobserved) rand...
Suppose a consumer group suspects that the proportion of households that have three cell phones is 30%. A cell phone company has reason to believe that the proportion is not 30%. Before they start a b...
 . Question 8 2 pts Question 8: Independent random samples of ash trees from two neighboring areas - one urban and one rural - are examined to see if there is a difference in the proportion of trees ...
13) What is the predicted % Happy for a country with a Life Expectancy of 79.0 years? (1 point)?     Predicted % Happy = ______     (14) The United States' overall life expectancy was 79.0 years...
A coin-operated coffee machine made by BIG Corporation was designed to discharge a mean of eight ounces of coffee per cup. If it dispenses more than that on average, the corporation may lose money, an...
 . K Data show that men between the ages of 20 and 29 in a general population have a mean height of 69.3 in standard deviation of 2.5 inches. A baseball analyst wonders whether the standard deviation...
In a random sample of 325 students at a university,269 stated that they were nonsmokers. Based on this sample, compute a 90% confidence interval for the proportion of all students at the university wh...
Please help me solve these equations using the sample of 50 selected(D906-955,F906,955) Histogram for both has been provided. I need help solving all of the equations.. Data Analysis [Histogram: Creat...
Please help answer question 2. What does business analytics use to help managers make better decisions? O A. mathematical or computer-based models O B. data and information technology C. statistical a...
Please help answer question 1. Which of the following relies on sorting data and calculating the cumulative percentage of the characteristic of interest? . . . O Anscombe's quartet O Bland-Altman plot...
Please help answer asap. Suppose that a manufacturer can produce a part for $12.00 with a fixed cost of $5,000. Alternately, the manufacturer could contract with a supplier in Asia to purchase the par...
The breaking strengths of cables produced by a certain manufacturer have historically had a mean of 1750 pounds and a standard deviation of 80 pounds. The company believes that, due to an improvement ...
For the 2 events below, identify if you think the event is random or not. You can highlight or underline your choice for "Random". You don't need to circle it.     Winning $500 on a lottery ticket?...
Please help with this task! Please only do it in R-code ("R-studio-Rscript.")  Please don't do it in any other code language. The correct answers are already given. Please implement the R-code in R-s...
Match the term on the left with the best answer below  . 1. Alpha or Internal Consistency 11. S 2 . Dependent Variable 12. Ho 3. Surveys 13. Ha 4.K Pie Chart 14. 02 5.M_Line Graph 15. 16. E 6. Indepe...
A normal distribution has a mean of µ = 100 with σ = 20. If one score is randomly selected from this distribution, what is the probability that the score will have a value between X = 85 and X = 110...
If P(A and B) = 0, A and B are mutually exclusive. Otherwise, A and B occur jointly P(A) = 0.240 P(B) = 0.310 P(A and B) = 0.200 P(C) = 0.200 Compute the probability of event A or B and enter your ...
Among fatal plane crashes that occurred during the past 70 years, 622 were due to pilot error, 56 were due to other human error, 591 were due to weather, 205 were due to mechanical problems, and 268 w...
Among fatal plane crashes that occurred during the past 70 ​years, 622 were due to pilot​ error, 56  were due to other human​ error, 591 were due to​ weather, 205 were due to mechanical​...
Indicate if the following variables are nominal, ordinal, interval, or ratio by typing your answers into the space provided after the questions: (1 point each, 6 points total) 1. ____________________?...
  researcher wants to examine the effects of exercise type and weight loss.  He randomly assigns 90 people to three different exercise regiments: pure cardio, pure weight training, and a combination...
Using the World95 data set in JASP, answer the following research question. RQ1: Does region and climate significantly influence crop growth (cropgrow)? What statistical test should you use to analyze...
 . b. Compare the population median to the mean of the sample medians. Choose the correct answer below. A. The population median is equal to double the mean of the sample medians. B. The population m...
Interpret what the mean and standard deviation specifically tell you about the heart rates of males and females in the sample. Are the heart rates for males or females higher?  Which data is more sp...
The following research hypotheses are based on the same data file that was used for the SPSS Bivariate Linear Regression assignment. This file contains the following variables: Age, Sex (1 = Male; 2 =...
Using your calculator, find the range and standard deviation, round to two decimals places: The table below gives the number of hours spent watching TV last week by a sample of 24 children. 34 27 59 5...
 . Question 1 of 7 2/4 Consider random samples of size 86 drawn from population A with proportion 0.46 and random samples of size 64 drawn from population B with proportion 0.12 Part 1 Your answer is...
Is the level of measurement nominal, ordinal, or scale?   Prompt: Forensic practitioners were asked the following survey questions...   1) What is the highest level of education achieved? Forensic p...