Executives of a supermarket chain are interested in the amount of time that customers spend in the stores during shopping trips. The mean shopping time, μ,spent by customers at the supermarkets has been reported to be 40 minutes, but executives have good reason to believe that µ is different from 40 minutes.The executives hire a statistical consultant and ask her to perform a statistical test.To perform her statistical test, the consultant collects a random sample of shopping times at the supermarkets. She computes the mean of these times to be36 minutes and the standard deviation of the times to be 15 minutes.Based on this information, complete the parts below.(a) What are the null hypothesis and the alternative hypothesis H₁ that should be used for the test?HoH₁:0(b) Suppose that the consultant decides to reject the null hypothesis. What sort of error might she be making?(Choose one)(c) Suppose the true mean shopping time spent by customers at the supermarkets is 33 minutes. Fill in the blanks todescribe a Type II error.:the hypothesis that u is (Choose one)A Type II error would be (Choose one)(Choose one) ▼ when, in fact, μ is (Choose one)нх0<0OSO0²0 ロ=ロ□<口0#0

Test is that whether the mean shopping time is different from 40 minutes It is given that Sample…

Answered: (a) What are the null hypothesis Ho and…

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

You are conducting a hypothesis test where the null hypothesis is that true population mean is less than or equal to 180. Your test will be at the 0.10 significance level. You take a sample of size n=60, and find that the sample average is 185, and the STANDARD ERROR is 15. What is the value of your test statistic? (Please answer to two decimal places. ex: 5.43)
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 5% level of significance. Give answer to at least 4 decimal places. Hours 45 46 59 54 49 60 54 50 50 45 51 55 (a) Determine the null and alternative hypotheses? Ho: Select an answer hours H1: Select an answer hours (b) Determine the test statistic ? v (c) Determine the p-value. p-value =
A researcher is conducting an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population that is known to have a mean of ? = 80. The results will be examined using a one-tailed hypothesis test. Which of the following is the correct statement of the null hypothesis? ? < 80 ? ≥ 80 ? > 80 ? ≤ 80
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject Ho when the level of significance is (a) a = 0.01, (b) a = 0.05, and (c) a = 0.10. P= 0.0158 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? O A. Reject H, because the P-value, 0.0158, is greater than a = 0.01. O B. Fail to reject H, because the P-value, 0.0158, is greater than a = 0.01. O C. Fail to reject Ho because the P-value, 0.0158, is less than a = 0.01. O D. Reject Ho because the P-value, 0.0158, is less than g = 0.01. (b) Do you reject or fail to reject Ho at the 0.05 level of significance?
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject Ho when the level of significance is (a) α = 0.01, (b) α = 0.05, and (c) α = 0.10. P = 0.0176 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? A. Reject Ho because the P-value, 0.0176, is less than α = 0.01. B. Reject Ho because the P-value, 0.0176, is greater than α = 0.01. C. Fail to reject Ho because the P-value, 0.0176, is greater than α = 0.01. D. Fail to reject Ho because the P-value, 0.0176, is less than α = 0.01. (b) Do you reject or fail to reject Ho at the 0.05 level of significance? A. Fail to reject Ho because the P-value, 0.0176, is less than α = 0.05. B. Reject Ho because the P-value, 0.0176, is greater than α = 0.05. C. Reject Ho because the P-value, 0.0176, is less than α = 0.05. D. Fail to reject Ho because the P-value, 0.0176, is greater than α = 0.05. (c) Do you reject or fail to reject Ho at the 0.10 level of significance? A. Fail to reject Ho because the…
Select the appropriate null and alternative hypothesis for the following research question: People who see therapists have lower depression scores than people who do not see therapists? xbar1 = the average depression score for people who see a therapist xbar2 = the average depression score for people who do not see a therapist O Null Hypothesis: People who see a therapist have depression scores lower than or equal to people who do not see a therapist i.e. xbar1 xbar2 O Null Hypothesis: People who see a therapist have depression scores higher than or equal to people who do not see a therapist i.e. xbar1 >= xbar2 Alternative Hypothesis: People who see a therapist have depression scores lower than people who do not see a therapist i.e. xbar1 < xbar2
The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject Ho when the level of significance is (a) a = 0.01, (b) a = 0.05, and (c) a = 0.10. P=0.1162 (a) Do you reject or fail to reject H, at the 0.01 level of significance? O A. Reject H, because the P-value, 0.1162, is greater than a = 0.01. O B. Reject H, because the P-value, 0.1162, is less than a= 0.01. O C. Fail to reject Ho because the P-value, 0.1162, is less than a= 0.01. O D. Fail to reject H, because the P-value, 0.1162, is greater than a = 0.01. (b) Do you reject or fail to reject H, at the 0.05 level of significance? O A. Fail to reject H, because the P-value, 0.1162, is less than a = 0.05. O B. Reject Họ because the P-value, 0.1162, is greater than a = 0.05. O C. Fail to reject Ho because the P-value, 0.1162, is greater than a = 0.05. O D. Reject H, because the P-value, 0.1162, is less than oa = 0.05. (c) Do you reject or fail to reject Ho at the 0.10 level of significance? O A. Reject H,…
Need help please!
ANSWER D, E, AND F ONLY NO HANDWRITTEN ANSWERS. HARD TO UDNERSTAND
The body weight of a healthy 3-month-old colt should be about ? = 68 kg. (a) If you want to set up a statistical test to challenge the claim that ? = 68 kg, what would you use for the null hypothesis H0? ? > 68 kg? < 68 kg ? = 68 kg? ≠ 68 kg (b) In Nevada, there are many herds of wild horses. Suppose you want to test the claim that the average weight of a wild Nevada colt (3 months old) is less than 68 kg. What would you use for the alternate hypothesis H1? ? > 68 kg? < 68 kg ? = 68 kg? ≠ 68 kg (c) Suppose you want to test the claim that the average weight of such a wild colt is greater than 68 kg. What would you use for the alternate hypothesis? ? > 68 kg? < 68 kg ? = 68 kg? ≠ 68 kg (d) Suppose you want to test the claim that the average weight of such a wild colt is different from 68 kg. What would you use for the alternate hypothesis? ? > 68 kg? < 68 kg ? = 68 kg? ≠ 68 kg (e) For each of the tests in parts (b), (c), and (d), respectively,…
Suppose a chef claims that her meatball weight is less than 3 ounces, on average. Several of her customers do not believe her, so the chef decides to do a hypothesis test, at a 10% significance level, to persuade them. She cooks 15 meatballs. The mean weight of the sample meatballs is 3.1 ounces. The chef knows from experience that the standard deviation for her meatball weight is 0.6 ounces. What is the competing hypothesis in symbolic notation?
In general, men have greater income than women. So, a researcher hypothesizes that men’s occupational prestige scores on average should be significantly higher than women’s. The following table shows the OPS by gender. The researcher wants to test the hypothesis at the .05 level. The estimated standard error of the difference between means is 1.0. Is it going to be a one-tailed test, or a two-tailed test? A. One-tailed test B. Two-tailed test

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS