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A company wants to detemine whether its consumer product ratings (0 - 10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a= 0.05, is the enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (n). Consumer Rating (last year) Rating (this year) 7 8 0 5 1 2 3 4 5 6 5 1 6 8. 5. 2 3 3 6 8 3 Identify the rejection region. Choose the correct answer below. O A. t>1.895 B. t< - 2.365, t> 2.365 OC. t< -2.365 O D. t< -1.895, t> 1.895 (c) Calculate d and Sg. d= 1.375 (Type an integer or a decimal.) Calculate sa

A company wants to detemine whether its consumer product ratings (0 - 10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a= 0.05, is the enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (n). Consumer Rating (last year) Rating (this year) 7 8 0 5 1 2 3 4 5 6 5 1 6 8. 5. 2 3 3 6 8 3 Identify the rejection region. Choose the correct answer below. O A. t>1.895 B. t< - 2.365, t> 2.365 OC. t< -2.365 O D. t< -1.895, t> 1.895 (c) Calculate d and Sg. d= 1.375 (Type an integer or a decimal.) Calculate sa

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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(e) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below.
A company wants to determine whether its consumer product ratings (0- 10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a = 0.05, is there enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (n). Consumer Rating (last year) Rating (this year) 4 5 6 5 3 1 4 3 3 Identify the rejection region. Choose the correct answer below. O A. t> 1.895 YB. t< -2.365, t> 2.365 O C. t< -2.365 O D. t< - 1.895, t> 1.895 (c) Calculate d and s4. d= 1.375 (Type an integer or a decimal.) Calculate sa- $= 1.923 (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t. t= 2.022 (Type an integer or a decimal. Round to three decimal places as needed.) (e) Decide hether reject or fail to reject the null hypothesis. Choose the correct answer below O Fail to reject the null hypothesis. O Reject the null hypothesis.
Transcribed Image Text:A company wants to determine whether its consumer product ratings (0- 10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. At a = 0.05, is there enough evidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (n). Consumer Rating (last year) Rating (this year) 4 5 6 5 3 1 4 3 3 Identify the rejection region. Choose the correct answer below. O A. t> 1.895 YB. t< -2.365, t> 2.365 O C. t< -2.365 O D. t< - 1.895, t> 1.895 (c) Calculate d and s4. d= 1.375 (Type an integer or a decimal.) Calculate sa- $= 1.923 (Type an integer or a decimal. Round to three decimal places as needed.) (d) Use the t-test to find the standardized test statistic t. t= 2.022 (Type an integer or a decimal. Round to three decimal places as needed.) (e) Decide hether reject or fail to reject the null hypothesis. Choose the correct answer below O Fail to reject the null hypothesis. O Reject the null hypothesis.
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