Statistics and Probability questions and answers in March 2023 — Page 9

 Skittles_Colour 1 Red 2 Green 3 Red 4 Red 5 Green 6 Yellow 7 Orange 8 Purple 9 Green 10 Red 11 Red 12 Yellow 13 Red 14 Orange 15 Yellow 16 Orange 17 Purple 18 Yellow 19 Purple 20 Red 21 Yellow 22 Ye...
 . A nationally representative survey of 1848 adults ages 18+ was taken October 376, 2013. It was conducted in English on land line and cell phones. Photos and videos have become an integral part of ...
 . A financial analyst is interested in determining if an investor's portfolio value is a determiner of whether they buy and sell stocks online (or trade online), A random sample of 348 investors, ea...
 . A certain health maintenance organization (HMO) wishes to study why patients leave the HMO. A SRS of 429 patients was taken. Data was collected on whether a patient had filed a complaint and, if s...
 . A guitar supply company must maintain strict oversight on the number of picks they package for sale to customers. Their current advertisement specifies between 900 and 1000 picks in every bag. An ...
Obedience School for Dogs is a small franchise that offers obedience classes for dogs. Some people think that larger dogs are easier to train and, therefore, should not be charged as much for the clas...
Assume that adults were randomly selected for a poll. They were asked if they​ "favor or oppose using federal tax dollars to fund medical research using stem cells obtained from human​ embryos." O...
Please help with all four questions. Thank you . 8. [-/5 Points] DETAILS ASWSBE14 6.E.035.MI. MY NOTES The time between arrivals of vehicles at a particular intersection follows an exponential probab...
Simple random sampling uses a sample of size  from a population of size  to obtain data that can be used to make inferences about the characteristics of a population. Suppose that, from a populati...
The CEO of a large electric utility claims that 80 percent of his 1,000,000 customers are very satisfied with the service they receive. To test this claim, the local newspaper surveyed 100 customers, ...
1. The weight of frogs in grams in a marsh population are normally distributed with mean (μ) equal to 23 grams and standard deviation (σ) equal to 1 gram.  What is the probability that the mean ( ...
1500 randomly selected pine trees were tested for traces of the Bark Beetle infestation. It was found that 130 of the trees showed such traces. Test the hypothesis that less than 10% of the pine tre...
 . The average price of gasoline in the United States is $2.86. Californians believe that they pay more for gas than the national average. A sample of 100 gas stations in California has a mean price ...
1) The number of children living in each of a large number of randomly selected households is an example of which data type? Be specific. 2) Does it make sense to construct a histogram for the state o...
 . 12-10. Lanhu Cement Corporation is a leading North American cement producer, with more than 6.5 million metric tons of annual capacity. One of its products is Portland cement. Portland cement's pr...
 . A weight loss program claims that program participants have a mean weight loss of at least 11 pounds after 1 month. You work for a medical association and are asked to test this claim. A random sa...
 . Select the correct Null and Alternative Hypothesis for the following situation: 1500 randomly selected pine trees were tested for traces of the Bark Beetle infestation. It was found that 153 of th...
    Reflect on the Relationship: Reflect on the relationship between square feet and sales price by answering the following questions: Is the square footage for homes in your selected region differe...
God bless you. Thank you. 6. Students' scores on the quantitative portion of the GRE follow a normal distribution with mean 150 and standard deviation 8.8. A graduate school requires that students sco...
 . 11. Suppose a data set has a bell shaped histogram. Use the empirical rule to approximate the percent of data that have z-scores greater than 2 or smaller than -2. (a) 2.5% (b) 5% (c) 25% (d) 47.5...
 . Going to work: A news report stated that the mean distance that commuters in the United States travel each way to work is 16 miles. Assume the standard deviation is 10 miles. A sample of 80 commut...
Please also draw a curve. Question 38 Needs Grading Draw normal curve diagrams for all questions in this problem. Over the years, the scores on the final exam in General Psychology have been normally ...
When I did a transformation for my linear regression (1/x), the coefficient of determination (r^2 value) only increased by 0.1. The original regression was already linear.  Would I say that the trans...
Would each of these residual plots be linear or non-linear. Why or why not? 1.  2. 3. Thanks!. 1.14 1.15 *Document1 DEG OX 14.5 y = 12.883040947+-22.598 1 = 0.971521336085 8.5 6.5 diameter 0.08 0.12 ...
Let  x  be a random variable that represents the weights in kilograms (kg) of healthy adult female deer (does) in December in a national park. Then  x  has a distribution that is approximately nor...
 In the model, you used on the Excel page. In two different studies, you found two different values of correlation coefficients. In the first case, you found r = +0.89 and in the other case, you fo...
The variability of each shift is shown as follows:   Shift one - Standard deviation of 1.5 minutes Shift two - Standard deviation of 1.0 minutes Shift three - Standard deviation of 2.5 minutes   Cen...
i need to make a linear regression and a residual plot with my data below. it will be oldest GPA vs. non oldest ( everyone who is not the oldest) GPA. im having a hard time coding everything. can some...
 . 11. Apply the Nearest-Neighbor Algorithm to find a Hamiltonian circuit for the graph below. Begin at vertex A. Find the cost. 103 84 C 93 88 121 112 96 E 12. Sort the edges from least to greatest....
In 1912, the RMS Titanic, a British passenger ship, sank in the North Atlantic Ocean after colliding with an iceberg. Historians do not know the exact passenger list, so the death toll is estimated. H...
A certain company will purchase the house of any employee who is transferred out of state and will handle all details of reselling the house. The purchase price is based on two assessments, one assess...
  A random sample of 90 observations produced a mean x=25.4 and a standard deviation s=2.8. a. Find a​ 95% confidence interval for μ. b. Find a​ 90% confidence interval for μ. c. Find a​?...
 . Done < AA myopenmath.com C Homework: Section 4.2 (Expected Value and Standard Deviation) Progress saved Done Vo. . . . Score: 0/7 0/7 answered Question 3 < 0/1 pt 9 2 98 0 Details Probabilit...
Set of injuries at the clinic-how would you organize the data & what type of graph would you use to display the data? What type of graph would you use to display the organized data from each frequ...
asap and correct. 19. [-/7 Points] DETAILS PODSTAT6 7.4.042. 0/10 Submissions Used MY NOTES ASK YOUR TEACHER Suppose that for a particular computer salesperson, the probability distribution of x = the...
nts well. 3. (ANOVA) The following table lists song lengths for popular indie rock band Beach House for three of their recent full-length albums, Depression Cherry, Thank Your Lucky Stars, and 7. Depr...
i am trying to figure out how to code line by line in rstudio to make a linear regression and then a residuals plot. i started off fine but it then says that i have different variable lengths. can you...
 . A recent national survey found that parents read an average (mean) of 10 books per month to their children under 5 years old. The population standard deviation is 5. The distribution of books read...
A small pilot study was conducted prior to planning a larger research study investigating the average SAT-Verbal scores of students at one large high school. In the sample, the mean was 444 with a sta...
You are a network manager for a large, regional Internet Service Provider (ISP) and telecommunications company.  Your company markets and sells two levels of network access: a residential service whi...
Ok, last night I submitted the data listed here and received some homework help but I'm still confused.          am trying to understand an assignment I have that answers the question: What is th...
According to Harper's Index , 50% of all federal inmates are serving time for drug dealing. A random sample of 16 federal inmates is selected.(a) What is the probability that 9 or more are serving tim...
Parte III- Tipos de variables     Identifica en cada caso si es una variable cualitativa, cuantitativa continua o cuantitativa discreta. (6 puntos) color de los ojos de los actores de la novela nuev...
One critique of sentencing research is that it generally focuses on the differences between white defendants and defendants of color and rarely examines differences between minority groups. The JDCC d...
. Select one of the following sources: data sources such as: Gallup (https://news.gallup.com/home.aspx ), Harris (https://theharrispoll.com/ ), World Value (https://www.worldvaluessurvey.org/wvs.jsp )...
Sampling randomly from two nominally identical machines executing identical operations may lead to control charting problems. If you think this is true (that there could be problems), please mention a...
It is estimated that 65% of a grapefruit crop is good; the other 35% have rotten centers that cannot be detected unless the grapefruit are cut open. The grapefruit are sold in sacks of 12. Let r be th...
Each DQ post must contain at least one citation from a source in support of your assertions, assumptions, opinions, or conclusions. This may be from your textbook, a source from the LIRN library, or a...
 . Q3. Proper blending of fine and coarse powders prior to copper sintering is essential for uniformity in the finished product. One way to check the homogeneity of the blend is to select many small ...
 . Q4. Calls for dial-in connections to a computer center arrive at an average rate of four per minute. The calls follow a Poisson distribution. If a call arrives at the beginning 2 of a one-minute i...
Suppose that all the pages are black and white, but each group of 25 consecutive pages (1-25, 26-50, 51-75, 76-100, 101-125) must be assigned to the same printer. Each printer can be assigned 0, 25, 5...
 . The scatter plot shows the relationship between the number of years an employee has worked and the annual salary of that employee. 34000 29000 Annual salary (in dollars) 24000 19000 0 5 10 15 Year...
 . The increase or decrease in the price of a stock between the beginning and the end of a trading day is assumed to be an equally likely random event. What is the probability that a stock will show ...
 . Determine the following probabilities. a. For n = 3 and II: = 0.18, what is P(X = 0)? b. For n = 11 and I: = 0.30, what is P(X= 10)? c. For n = 11 and II: = 0.60, what is P(X = 9)? d. For n = 4 an...
(25 points) An engineering company is about to undertake a major overhaul of a factory's machinery for a customer. The overhaul will be carried out on a Saturday and Sunday but, if it is not completed...
 . A student is taking a multiple-choice exam in which each question has five choices. Assuming that she has no knowledge of the correct answers to any of the questions, she has decided on a strategy...
In a cohort study conducted with 51,876 military members, the researchers found that PTSD had a prevalence of 11.66%. They separate the subjects of the study by job: Infantry or Non-Infantry. Infantry...
i need help......   A business organization needs to make up a 8 member fund-raising committee.  The organization has 6 accounting majors and 7 finance majors.  What is the probability that at leas...
need help......     A toy manufacturer inspects boxes of toys before shipment.  Each box contains 17 toys.  The inspection procedure consists of randomly selecting three toys from the box.  If on...
Respond to at least one peer. Further the dialogue by providing more information and clarification. Consider how different distributions might affect the different graphs. How might other variables af...
PROBLEM In a school district the average in a test on X subject is 72 and it is being used a new teaching strategy that has not been tested for effectiveness.   HYPOTHESIS What hypothesis to use?   ...
Assume that the class's average heart rate is 62. We will utilise this information to conduct our own hypothesis test using the single sample mean (class size is 16 students). How should the null hypo...
Here is my table that I have computed in JASP: Pearson's Correlations       Pearson's r p Lower 95% CI Upper 95% CI Effect size (Fisher's z) SE Effect size gpa   -   quiz1   0.152   0.121   -0...
QUESTION 1 A human resource manager is trying to reduce the percentage of employees resigning at the organisation's two factories in Brisbane and Christchurch. She implements an employee loyalty schem...
What would be the code for this in matlab or python?. Consider the distribution p(x) x exp(sin(x) ) for -T _ x _ T. Using rejection sampling with q(x) = N (x|0, 02) show that a suitable value for M su...
Could you write down the answers in a clear format rather than just typing? Thank you.  . Example: green and yellow peas Example: One of Mendel's hybridization experiments yielded 428 peas with green...
 . Problem 3: Suppose X1,X2, . . . ,Xn is a sample of size n from a Poisson distribution With parameter A > 0. Suppose we want to test H0 : A = A0 against H1 : A = A1. Show that if A1 > A0, the...
Question 3 1 pts A crazy statistics tutor only passes 20% of students in a university subject, by examining all students in foreign languages that they do not know. If 20 students are randomly assigne...
Don't copy from others and chat gpt Answer should be only in textual format and without any inserting table or image.. (5 points) Munchie's Potato Chip Company claims that the weight of the contents o...
   work in Excel Pls and post Link PlZ. Qualitative Quantitative Discrete Variable 4. A student's state of birth 7. Student rank in class 9. Gender 10. Rating of a finance professor 3. The number ...
 Excel plz. Ch.2—Case study 1: Pelican Stores Pelican Stores, a division of National Clothing, is a chain of women's apparel stores operating throughout the country. The chain recently ran a prom...
bivariate correlation: what is the relationship between age and length of stay in rehab?  I have to construct a scatterplot and run a bivariate correlation to determine the relationship of the variab...
In a study among 200 high school students, 64 students were diagnosed with an anxiety disorder. Among students diagnosed with an anxiety disorder, 19 students reported that they vaped regularly. Among...
 . For a given population, the average number of cases for a specified time period is 2. Please select which answer choice provides the parameters of the Poisson distribution: O 1 = 2, 0 =2 O 1 =1,0=...
 . A hospital-based study enrolled 64 patients to observe the effects of diet on total cholesterol. The average total cholesterol level for adults is 190mg/dL. The standard deviation observed from pr...
z-scores Write in your answers and your work. Please report and label all your answers clearly  and show your work as neatly as possible! "People with high levels of openness are more likely to seek ...
 . Suppose the discrete random variable X has the probability distribution below: X 0 1 2 3 4 P(X) 0.11 0.52 10.19 0.12 0.06 1) Find the P(X < 3) 2) Find P(X > 1) 3) Find mean HI 4) Find Varian...
What do you think is the role of science and technology in our society today?A coin has 2 sides, heads and tails. What is the probability of a coin flip resulting in heads? (Note: Flipping a coin is a...
2. Transforming X values into z-scores In preparation for the upcoming school year, a teacher looks at raw test scores on the statewide standardized test for the students in his class. Instead of look...
A school district posted a poll on its website asking residents to share their opinion about increasing property taxes to pay for a new stadium.  Athletes and coaches in the district were surprised t...
The marketing manager of a professional soccer team wanted to estimate the mean income of fans that attend their games. The manager asked 50 people who were seated just behind the team's bench about ...
 . During halftime of a college football game, the university president has the announcer ask fans to go to section 429 if they are interested in filling out a survey about the cleaniness of restroom...
Assume that when a rod is manufactured, it will be able to withstand up to a certain force while remaining intact. Any force above this will cause it to fracture. Whatever this maximum tolerable force...
Assume that when a rod is manufactured, it will be able to withstand up to a certain force while remaining intact.  Any force above this will cause it to fracture.    Whatever this maximum tolerabl...
 . numbers of returns. An Etsy store receives an average of 6.5 returns per day from online shoppers. For a sample of 12 days, it received the following 3 4 3 4 9 4 5 9 1 6 7 10. e. Compute the p-val...
Let X_1, X_2, ...., X_n by a sequence of independent and identically distribution random variables with exponential density: f_X(x;theta) = {(1/theta) * e^(-x/theta), if x > 0, and 0 otherwise}, wh...
10. A motor club wishes to estimate, to within 1 cent, the mean price of 1 gallon of regular gasoline in a certain region, with 98% confidence. Historically the variability of prices is measured by σ...
 . The manufacturer of the X-15 steel-belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles. Assume the mileage wear follows the norm...
Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks such as problems solving (Linde & Bergstroem, 1992). To demonstrate this phenome...
 . An Etsy store receives an average of 6.5 returns per day from online shoppers. For a sample of 12 days, it received the following numbers of returns. 4 3 4 9 4 5 9 1 6 7 10 & Click here for th...
 . 2. Suppose you are comparing two populations and get the following statistics from random sampling: population 1 population 2 X -0.5 0.5 10.4 20.5 , df = 21 35 100 Let u1 and /2 denote the populat...
A Select one of the research questions below and re-write it as a better articulated RQ. Then, write a one-paragraph description that includes the following. Improved research question based on origin...
 . 2: 1.2 HW < Question 13, 1.2.33 HW So O Po Determine whether the given value is from a discrete or continuous data set. When a car is randomly selected, it is found to have 3 wipers. . . . Choo...
Excel is a good way to get a feel and comfort with the data. You can even try with statistics or numbers you are familiar with, maybe each day's drive time or miles to work to use the standard deviati...
 . 4. A chemist is doing an acid-base titration to determine the plI of an unknown substance. The actual plI (unknown to the chemist) is 7.3, but since there are errors any time she performs the titr...
 . To estimate the number of typographical errors in a 65-page manuscript, a systematic sample of pages is selected by first selecting a random number between 1 and 10 and including in the sample tha...
 . 2. Imagine a circuit contains two specialized parts. The lifetime for part A is normally distributed with mean 8.6 years and standard deviation 0.5 years. The lifetime for part B follows an expone...
The following data show the lengths of boats moored in a marina. The data are ordered from smallest to largest. Identify the median. Do not round.. Question 11 (1 point) Saved The following data show ...
A panel comprised of 15 people is being selected from a group of 10 biologists and 10 chemists. a) What is the probability that the panel will have 8 biologists and 7 chemists? b) What is the expected...
A taskforce is monitoring the well-being of Berkeley students. Each day, they survey 10 students to ask about their well-being. The probability of a student answering that they are feeling good is 80 ...
You're conducting a trial to test to see if a new medication for familial hypercholesterolemia is effective at reducing the amount of LDL cholesterol among patients with an elevated LDL (mean 170 md/d...
A total of 5,595 cycling injuries were reported in Denver between January 1, 2006 and December 31, 2015, which averages to about 46.625 cases per month. Let X represent the count of cycling injuries i...
1.) Calculate the sensitivity and positive predictive value of the tests in this sample of 800.   2.)  Given 10 tests from this sample, what are the chances that 2 or fewer have positive tests? Calc...
1. As a healthcare analyst for a large regional hospital in Mendocino County, you have been tasked with researching how to best allocate limited space in the operating room recovery wing. In patients ...
1) An employer pays a mean salary for a​ 5-day workweek of ​$1000 with a standard deviation of ​$140. On the​ weekends, his salary expenses have a mean of ​$500 with a standard deviation of ...
11. A computer chip has a 0.1% chance of malfunctioning while in use. Consider a computer that has 5 of these chips. What is the probability of either 1 or 2 of them malfunctioning while the computer ...
Suppose that 70% of the apartment buildings in a city have dog parks. If 10 apartment buildings in this city are selected at random, a) what is the probability that at least 8 have dog parks? Round to...
 . la. In your own words, explain the difference between a parametric and nonparametric method. [1 mark] 1b. In your own words, explain the difference between a two-sample t-test and a paired t-test....
 . Question 3. The table below shows the stem density (number of stems per my) of seven plots before and after treatment for an invasive plant called European common reed (Phragmites australis). Do t...
 . 471522.2159812.qx3zqy7 Jump to level 1 A company is reviewing a batch of 27 products to determine if any are defective. On average, 3.2% of products are defective. Does this situation describe a b...
 . 12. The graph below represents the function h. -3 a. Find h(-2). (1 point) b. Find h(2). (1 point) c. Find all x such that h(x) = 1. (2 points) d. Find the domain of h. (2 points) e. Find the rang...
 . Problem 1. Let Y, be independent continuous random variables that take on nonnegative values with probability density function f(y) = 12ye-dy with 1 >0. (a) Show that this distribution belongs ...
Copy the raw data from the EXAMPLE excel pdf worksheet entitled, "samples" into a separate excel worksheet in your workbook and label the worksheet "samples".   Using the excel formulas outlined on p...
13.David is purchasing his first new car. He is given a choice of two upholstery materials (cloth and leather) and four colours (black, blue, grey, and red). a) Draw a tree diagram to illustrate his c...
 . At the cafeteria, Jeff has a choice of two soups, five types of sandwich, and two desserts. In how many ways can he choose his 5. lunch if he has a soup, sandwich and dessert? a) 9 b) 20 C) 12 d) ...
Please read the article below and answer the following questions: How do the mixed-method evaluation could both strengthen and weaken the evaluation design? Please, suggest ways that process evaluatio...
1)Copy the raw data from the EXAMPLE excel pdf worksheet entitled, "grouped frequency distribution" into an excel worksheet and label the worksheet "grouped frequency distribution".   (B)  use the f...
Table 6 Multinomial Test          χ² df p       H₀ (a)   2.083   2   0.353                 Descriptive   Flavor Observed Expected: H₀ (a) Chocolate   0.536   0.500   Straw...
 . Problem 5. A student wants to estimate the average weight (in pounds) of the students who live in his co-ed dorm. The dorm consists of 130 suites, each with 4 students. Students in the same suite ...
In Question 16, you tested for a relationship between black and Hispanic Juveniles in terms of the length of probation sentences received. Now let's find out whether there is a between-group differenc...
Find out whether there is a between-group difference among those sentenced to community service. The following table shows pairs of youths matched on gender (male) and offense type (weapons). Using an...
Say you've addressed the distribution issue now, and you find yourself with a mean of 1.9 fewer errors than you expected with standard PSI treatment (Mean of 8.1 errors in your sample, vs mean of 10 e...
 . Problem 2 Bob waits for buses 14 or 99 to take him home. Both independently arrive according to a Poisson process of rate 1 bus per 5 min for the 99, and 1 per 10 min for the 14. The probability t...
I would like to predict binary data (1,0) 1 mean open an account, 0 mean not open account.  You can use historical data in train sheet to predict test sheet [outcome] column.    Question: In test s...
 . Page w 16) A measure of social skills has a mean of 45 in the population. A sample of 30 adults with autism earn a mean score of 37 (SD = 7) on this measure. Is this sample significantly different...
 . Page < 6) A group of 60 elderly nursing home patients earn a mean score of 40 on a memory test. The population mean for this test is 47 (SD = 4). Are the elderly patients significantly differen...
 . Page 1 of 2 Chapter 8 Problem Set 1) What are the degrees of freedom, one-tailed cutoffs, and two-tailed cutoffs for the following sample sizes? a. 13 b. 5 C. 9 d. 28 2) A group of 13 high school ...
 . Hypothesis Test of Proportion Question: The claim for a marketing campaign is that 0.24 of clients respond, and you want to prove it is not true. Your survey of 259 clients showed 41 respond. Test...
Source SS df MS F p Between 209.48  3 69.83 4.29 ? Within 585.50  36 16.26     Total 794.98  39       In our summary table we can see that MSbetween is greater than MSwithin, making F larger t...
Please read the following before answering Questions 4 Sometimes only summary data is available for a variable of interest.  If you are conducting a hypothesis test, you can use R to determine the p-...
iii) By using the above data, draw a box and whisker's plot in the below graph paper.. Question 1 The prices (RM thousand) of 25 randomly chosen properties in District SYP are listed as follow: 890 10...
10 questions so please double check and help. statistics quiz has 10 multiple choice questions. Let X represent the number of questions answered correctly. Then A is a discrete random variable that ca...
An investigation of two kinds of photocopiers showed that a random sample of 60 failures of one kind of photocopier took on average 84.2 minutes to repair, while a random sample of 60 failures of anot...
 . Karissa is a college basketball player who makes 85% of her free throws. In a recent game, she had 8 free throws and missed 4 of them. Using software, a calculator, or Table C, compute 1 - P(X &lt...
Solve z scores 27-41. Participant ACAT Statistics Test z-Scores for ACAT Scores for the Class Statistics Test Scores for the Class 389 27) 2 350 28) 3 515 29 A 400 30) UI 575 31) 6 520 32) 536 33) 610...
     . 9. Consider a (regular) one—dimensional model M : {Pg}. Suppose T is a possibly biased estimator for 6, such that IE9[T(X)] : 11(0) where h is a given function. Show that Varg(T(X)) 2 whic...
Data Visualization: Comparing the Two Teams   In the Python script, you created a visualization for the difference in the distributions of points scored by your team and the assigned team.    See S...
Data Visualization: Points Scored by the Assigned Team   In the Python script, you created a visualization for the distribution of points scored by the assigned team.    See Step 4 in the Python sc...
 . A pharmaceutical company wishes to test a new drug with the expectation of weight reduction. Ten subjects are randomly selected and their weights are recorded. The subjects were placed on the drug...
 . Jump to level 1 v A boutique wants to determine how the amount of time a customer spends browsing in the store affects the amount the customer spends. 3 50 40 30 Amount spent (in dollars) 20 10 10...
C is also not 0.6694. The president of Doerman Distributors, Inc., believes that 31%% of the firm's orders come from first-time customers. A simple random sample of 100 orders will be used to estimate...
A cybersecurity firm wants to compare the cracking capability of passwords that one uses for protecting their data.  One way of evaluating the crackability of a password is by the number of character...
 . Jump to level 1 - A boutique wants to determine how the amount of time a customer spends browsing in the store affects the 2 amount the customer spends. 50 The equation of the regression line is 3...
 . Question 1 1 pts About 6% of people in the general population have a Serious Mental Illness (source 5—)). Using this statistic, estimate how many people will have a Serious Mental Illness in a c...
This is the question. 1!). Communicate and Justify Brian asks his classmates how many mystery books and how many adventure books they own. He states because the mean number of mystery books, 5, is les...
1- The U.S. Department of Justice examined all reported cases of identity theft for U.S. residents aged 16 or older. Their data show that of all the reported incidents of identity theft in a recent ye...
What is a simple, easy to follow example of a hypothetical questionnaire survey (that you'd be able to answer other statistical questions with) such as finding the standard deviation, mean, median, th...
From 1990 to 1995, the mean weight of babies born in Texas was 5.9 lbs, and the standard deviation was 0.20 lbs. Let X = the weight newborn babies in Texas between 1990 and 1995. Then X ~ N(5.90, .20)...
Hello. I need help creating linear regression models in R Studio. Here is what I am trying to do: 1. The pixel values in both the training set ranges in [0, 255], thus divide them by 255 to normalize ...
  67 percent of adults in a certain country believe that life on other planets is plausible. You randomly select five adults and ask them whether they believe that life on other planets is plausible....
Question 3 (Total: 30 Points) You are interested in buying a used phone, but before you make a purchase you want to understand what factors determine the price in this market to make sure you get the ...
In 2013, the Canada Safety Council stated that 84% of drivers buckled their seat belts. Assume that this percentage is still accurate. a. If four drivers are randomly selected, what is the probability...
Hello tutors, can I please get you assistance with the following ?I apologize if its long, each part references the one above...   Many students never arrive to lecture on time, and always arrives wi...
                          use below information and the data for the answers, provide excel sheet and graph.                                                     ...
Hello tutors, can I please get you assistance with the following ? Thank You so much   Consider a random variable X with density function    f ( x ) = 2 5 1 ​ ( 1 0 − 2 x ) , 0 ≤ x ≤ 5   M...
   . 3. (174 attempt} Topic: time series models Questions: i You are given the following time series model: XL = fli'Xi—I + Et- Let K = Xgh that is, the original process observed only at even t...
Hello tutors, can I please get your help regarding this distribution question?    The random variable "sum" whose density histogram is being represented in this image is 𝑠𝑢𝑚= ∑ i = 1 n ?...
 . In my dissertation, I studied the effects of specific negative emotions on the number of words that people recall. Imagine that I am using a factorial design with both word emotion (disgust, sadne...
Hello tutors, can I please get you assistance matching each event with the following answer choices? Thank You so much    . According to engineering records, 16.2% of dams have a recreational area a...
Hello tutors, can I please get you assistance with the following ? Thank You so much The time in  months spent by wounded soldier in a veteran's hospital is exponentially distributed with parameter ?...
Hello tutors, can I please get you assistance with the following ? Thank You so much   Consider the experiment of drawing a random sample of 100 bags of fertilizer  to see whether a factory producin...
20. A psychologist wanted to test whether a new treatment would help increase the energy levels of her depressed patients in a large clinic. She did an experiment where one group of depressed patients...
Hello tutors, can I please get you assistance with the following ? Thank You so much   Saline tosses a fair coin three times.   The random variable  X  is a Bernoulli random variable where 1 repr...
 . 4 4. Given the employee performance rating data below (x = 3, 5, and 4), compute the population standard deviation. E(X - U) E(X - X N N- 1 You can use this chart to help you organize your calcula...
Question 1: Question 2: Question 3: Question 4: Question 5: Question 6:  . Suppose we want to form three-digit numbers using the set of digits {0,1 ,2,3}. For example, 301 and 223 are such numbers, b...
Hello tutors, can I please get you assistance with the following ? Thank You so much   Let X be a random variable denoting the proportion of the storage tank of gasoline replenished by a gas station ...
Questions 7 and 8!. 7. For two events, E and F, if it is known that P(F) = 0.9, P(E / F) = 0.7. What is P(E intersection F)? PC Eand F ) = 0.7 PCF ) = 0. 9 8. A machine has a 0.03 probability of produ...
Hello tutors, can I please get you assistance with the following ? Thank You so much   The time in  months spent by wounded soldier in a veteran's hospital is exponentially distributed with paramete...
 . One hundred college seniors attending a career fair at a university were categorized according to gender and according to primary career motivation. The table below shows the results. If one of th...
 . The manufacturer of the ColorSmart-5000 television set claims that 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group ra...
 . 4. Given the employee performance rating data below (x = 3, 5, and 4), compute the population standard deviation. E(x - H) E( x - X) N N-1 You can use this chart to help you organize your calculat...
   . Recall that a conflict of interest scenario was presented to a sample of 210 marketing researchers and that 113 of these researchers disapproved of the actions taken. (a) Let p be the proportio...
 . Bayus (1991) studied the mean numbers of auto dealers visited by early and late replacement buyers. Letting // be the mean number of dealers visited by all late replacement buyers, set up the null...
asap and neat. Disks of polycarbonate plastic from a supplier are analyzed for scratch and shock resistance. The results from 157 disks are summarized as follows: Shock Resistance High Low Scratch Hig...
- Given Ω={0,1}^3 and a uniform probability space. What is Pr[000|{000,001,111}]? (Answer should be a/b.)  - Let A be the event consisting of length-3 bit-strings with at least 1 one, and let B be t...
Ai using dislike. Sodas R Us just installed a new bottling machine. They ran the machine for 1 day and produced 150 bottles pulling 5 off the line to sample. One key factor in the taste of the soda is...
not use Ai will report. Question 2a For events A and B, it is given that P(A) = 0.4 P(AUB) = 0.76 P(B|A) = 0.6. Question 2a(i) Calculate () and show that events A and B are independent. (5 marks) Ques...
Suppose the researchers are interested in comparing the ease of intubation score between the Pentax AWS and Macintosh #4 blade groups, adjusted for the patient's age, gender, and Cormack-Lehane grade ...
Let these functions are Power Spcectrum Density functions ,   please explain whether these function converge or diverge and can have negative values.  . (a) 1 V1 -4f2 (b) exp[-(f - 1) 2] (c) f2 f6 +...
 . nstructions 12 If H1: H1 - Ho > 0 and a = .05, what effect size seems to interest me if I wish to achieve power = .7 with a sample size of 14? A) 9'0 B L'O 8'0 D ) 0.3 Previous 0-uonsanb 1 1-wo...
 . 2. Suppose that Yo~ F(g (x, B)) with F in the exponential family and g the canonical link, and such that E[Yi] = Hi. (a) Show that V(Mi) = 1/g'(Hi). (b) Now show, using the delta method, that se(p...
Using he data in the table decide what might be the better measure for central tendency? Find the standard deviation, mean, median, and mode. How variable are the data? How would you describe this dat...
 . Instructions Retaining the null hypothesis when the research hypothesis is true is most closely related to which of the following: A power B C C B D None of the provided choices Previous mitting Q...
The data in the frequency table below represent marital status of people in a survey.  An appropriate measure of variation is what? Find that measure of variation. How variable are the data? How woul...
Use the data in the table below to find the mean, median, mode, and standard deviation.  8 represents having 8 or more children and 9  means that the researcher DK/NA   Number of Children  Number ...
Please read everything   Please help me with my discussion post   Using your data from the Discussion from Week 2, go back and perform a linear regression.  Find the equation of the linear equation...
1. If P(E) = 0.54, P(F) = 0.41, and P(E and F) = 0.15, compute: a. P(E or F) b. P(not E) (the probability of the complement of E) Show all work. For any numerical value that you don't use 1-var stats ...
I'm lost please help . You may need to use the appropriate appendix table or technology to answer this question. For a t distribution with 18 degrees of freedom, find the area, or probability, in eac...
A quantitative research study requires a numerical measure on the dependent variable. A quantitative measure is based on a scale. For example, say you are interested in measuring the creativity of stu...
perfect if use AI dislike. 1. You have two large bins of several thousand plastic beads, Bin A is 60% red beads; Bin B is 48% red beads. Suppose you take a random sample of 80 beads from each bin and ...
Please help with this question.. Using the following uniform density curve, answer the question. T P(X) 125- 8 18) What is the probability that the random variable has a value less than 4? A) 0.625 B)...
Question 6 A certain pain medication is effective for an average (mean) of 632.8 minutes after orthoscopic surgery with a standard deviation of 26.6 minutes. What is is the probability that the pain ...
 . 2. A man with 71 keys wants to open his door and tries the keys independently and at random. Assume only 1 key opens the door. Find the expectation and variance of the number of trials required to...
To standardize the beta coefficients, we first ______.   a. analyze the significance of each data point     b. analyze the residual variation     c. convert the original data to standardized z sc...
In a random sample of 2,300 mortgages taken out in a certain region last year, 187 were adjustable-rate mortgages. a. Give a point estimate of the proportion of all mortgages taken out in this region ...
According to the information above, which of the following is an appropriate analysis of the trees planted? Select the correct answer below:     From the data, when the number of benches increased ...
Linearity of expectations - selecting teams. (a) 10 kids are randomly grouped into an A team with five kids and a B team with five kids. Each grouping is equally likely. One kid in the group, Alex, ha...
For Q1 and Q2, you need to use the  online application of the normal distribution :  https://istats.shinyapps.io/NormalDist/   Q1 (4 pts)_Suppose that the IQ scores (measured by the 5th edition of ...
apakah jawaban dari pertanyaan ini?. Tim dari UMN memperkirakan bahwa peluang keberhasilan uji setiap sampel darah untuk tes COVID-19 di Universitas Multimedia Nusantara adalah 1/3. a) Berapa jumlah s...
We define the stochasic variables Y 1 and Y 2 the following way:   Y 1 : Hourly wage in period 1 Y 2 : Hourly wage in period 2   The hourly wage in period 1 is normally distributed with a mean  μ ...