2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 creditcards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was takenof adult shoppers in major shopping malls in Detroit. The number of credit cards each of theseshoppers had access to is listed below:25396.386.9.89.4564.a. Test the claim made in the article at an appropriate level of significance. (State all relevanthypotheses, conditions, p-values, etc. that help you reach your result).b. Produce a relevant confidence interval designed to capture the true mean number of credit cards thatadults have access to. Explain how your interval backs up the result of your test of significancefrom part a.

Name: 2. An article in a magazine on financial affairs claimed that adults
Uploaded: 2024-03-20T07:06:41.000Z
Channel: Bartleby
Description: 2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 creditcards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was takenof adult shoppers in major shopping malls

Given data is ; 5 2 5 6 5 3 9 6 3 8 6 9 8 5 9 0 4 6 5 2 6 7 4 0 sample size(n) = 24 population…

Math

Statistics

2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 credit cards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was taken of adult shoppers in major shopping malls in Detroit. The number of credit cards each of these shoppers had access to is listed below: 2 3 9. 3 8 6. 9. 8 4 6. 4 a. Test the claim made in the article at an appropriate level of significance. (State all relevant hypotheses, conditions, p-values, etc. that help you reach your result). b. Produce a relevant confidence interval designed to capture the true mean number of credit cards that adults have access to. Explain how your interval backs up the result of your test of significance from part a.

2. An article in a magazine on financial affairs claimed that adults have access to an average of 6.0 credit cards. Included are bank, gasoline, telephone, and department store cards. A sample of 24 was taken of adult shoppers in major shopping malls in Detroit. The number of credit cards each of these shoppers had access to is listed below: 2 3 9. 3 8 6. 9. 8 4 6. 4 a. Test the claim made in the article at an appropriate level of significance. (State all relevant hypotheses, conditions, p-values, etc. that help you reach your result). b. Produce a relevant confidence interval designed to capture the true mean number of credit cards that adults have access to. Explain how your interval backs up the result of your test of significance from part a.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A researcher is interested in whether self-proclaimed “cat people” are more introverted than self-proclaimed “dog people.” Select one: a. factorial ANOVA b. one sample t test c. paired samples t-test d. one-way ANOVA e. t-test independent means
As practiced by many in buying skirts or pants, they use the neckline to check if the waistline of the skirts or pants fits them. We would like to study this claim by using a random sample of neckline and waistline of 15 people. The data collected are summarized as follows: Subject 1 2 3 4 5 17 8 169 10 11 12 13 14 15 Neckline 35 34 38 45 38 33 38 42 44 33 35 31 33 35 30 (cm) Waistline(cm) 83 66 97 100 86 82 77 82 91 62 93 57 67 93 57 Construct a scatter plot for the waistline and neckline using the data presented What does the scatter plot tell you about the sign of the slope of the regression equation? (positive or negative) 1-2. Estimate the regression line of neckline and waistline. Using the model, we wish to estimate the waistline given information about the neckline. Solve for the y intercept, a and the slope, b. Round off final answers to two decimal places. a = b = 3-4. The regression equation is: Waistline'= neckline 5. Using the regression equation/model for waistline in…
3) What proportion of people scored worse than 14 or better than 22, based on the following sample: 20 11 16 26 13 28 15 18 21 14 12 17
In selecting a sample, if you were to obtain a systematic sample of 40 from a population of 600, and your randomly selected starting point is 12, your next three selections should be: a. 24, 36, 48 b. 27, 42, 57 c. 42,92, 137 d. 90, 140, 190
Early Morning Delivery Service guarantees delivery of small packages by 10:30 A.M. Of course, some of the packages are not delivered by 10:30 A.M. For a sample of 230 packages delivered each of the last 15 working days, the following numbers of packages were delivered after the deadline: 10, 19, 6, 11, 13, 7, 3, 2, 6, 3, 3, 4, 7, 8, and 6. (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 3 decimal places.) Click here for the Excel Data File a. Determine the mean proportion of packages delivered after 10:30 A.M. Mean proportion b. Determine the control limits for the proportion of packages delivered after 10:30 A.M. p(1-p) 230 3 LCL UCL Were any of the sampled days out of control? No Yes
To find out approximately how many hours its residents are spending playing cards at a senior retirement home, the recreation director conducts a random survey. The table below shows the number of hours per week these randomly selected seniors play cards. Hours Seniors Play Cards Senior Citizen Hours Played Joe 12 Mary 3 Bert 5 Frank 9 Elizabeth 11 Janet 4 What is the estimated number of hours all seniors at this retirement home play cards, the population mean, based on the sample and rounded to the nearest whole hour? a 7 hours b 8 hours c 9 hours d 10 hours
As practiced by many in buying skirts or pants, they use the neckline to check if the waistline of the skirts or pants fits them. We would like to study this claim by using a random sample of neckline and waistline of 15 people. The data collected are summarized as follows: Subject 1 2 3 4 5 6 7 8 9 10 11 12 14 15 13 Neckline 35 34 38 45 38 33 38 42 44 33 35 31 33 35 30 (cm) Waistline(cm) 83 97 100 86 82 77 82 91 62 93 57 67 93 57 3-4. The regression equation is: Waistline' = - 3.9964 2.30321 neckline 5. Using the regression equation/model for waistline in Number 3-4, estimate the waistline if the neckline of a person is 37 cm. Round off final answer to two decimal places. 6-8. Solve for the coefficient of determination, r2 (Express the answer in percentage form, r2 x 100%; Round off final answers to two decimal places): E(y/ – 9)² = E(y – 9)² = 9. Solve for the coefficient of nondetermination (Express the answer in percentage form; Round off final answer to two decimal places):
Calculate the range of Commuting Time in your sample. Using the rule-of-thumb discussed in the learning area, how many bins do you propose to use for grouping Commuting Time?
1. Sample data about the listing price of a house is collected from Surrey, Guilford area in 2022 and the data is given below. Using the data answer the following questions: N 1 2 3 4 5 Listing Price 1049900 11 1229000 1049900 12 1230000 1050000 13 1075000 14 1298999 1299000 1299000 1075000 15 16 1398000 1078800 1179000 17 18 1398000 1399000 1188000 1188000 19 1449900 1225000 20 1450000 a. What is the mean listing price of a home? b. Generate appropriate numerical summaries for the listing price of a home, the sample standard deviation, etc. 6 7 8 9 10 Listing Price N Listing Price 21 1450000 22 1450000 23 1469900 24 1475000 25 1475000 26 1480000 1499000 27 28 1499000 29 1499233 30 1499900 N C. Use these summaries to develop a 95% confidence interval to estimate the mean listing price of a house in your selected city. That is, you will be using the sampling data you collected to estimate the population parameter (listing price). Make sure to show both your calculations and a final…
From this population data set: (3, 6, 9, 12, 18), how many possible samples with sample size of 3 can be chosen? O a. 3 O b. 5 O c. 10 Od. 15
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
A random sample of employees participating in a company fitness program were asked how many days they logged an exercise activity in the past month. Their responses are reported in the histogram below.Based on the histogram above, what is the class width? Clas width = ? Days What is the sample size? Sample size = ? employees