The final scores of games of a certain sport were compared against the final point spreads established by odds makers. The difference between the game outcome and point spread (called a point-spread error) was calculated for 225 games. The mean error is x=- 1.1. The population standard deviation of the point-spread error a= 14.4. Úse this information to test the hypothesis that the true mean point-spread error for all games differs from 0. Conduct the test at a = 0.01 and interpret the result. Determine the null and alternative hypotheses. Choose the correct answer below. OB. Ho Ho 20 H Ho < 0 OD. Ho: Ho s0 H Ho > 0 OA. Ho: Ho =0 H Ho #0 OC. Ha: Ho *0 H Ho 0 The test statistic Z= (Round to two decimal places as needed.) The p-value = (Round to three decimal places needed.) What is the appropriate conclusion at a= 0.01? O A. Reject Ho. There is sufficient evidence to conclude that the true mean point-spread error for all games differs from 0. O B. Reject Ho. There is insufficient evidence conclude that the sample mean point-spread error for all games differs from 0. OC. Do not reject Hg. There is insufficient evidence to conclude that the true mean point-spread error for all games differs from 0. OD. Do not reject Hg. There is sufficient evidence to conclude that the sample mean point-spread error for all games differs from 0.
The final scores of games of a certain sport were compared against the final point spreads established by odds makers. The difference between the game outcome and point spread (called a point-spread error) was calculated for 225 games. The mean error is x=- 1.1. The population standard deviation of the point-spread error a= 14.4. Úse this information to test the hypothesis that the true mean point-spread error for all games differs from 0. Conduct the test at a = 0.01 and interpret the result. Determine the null and alternative hypotheses. Choose the correct answer below. OB. Ho Ho 20 H Ho < 0 OD. Ho: Ho s0 H Ho > 0 OA. Ho: Ho =0 H Ho #0 OC. Ha: Ho *0 H Ho 0 The test statistic Z= (Round to two decimal places as needed.) The p-value = (Round to three decimal places needed.) What is the appropriate conclusion at a= 0.01? O A. Reject Ho. There is sufficient evidence to conclude that the true mean point-spread error for all games differs from 0. O B. Reject Ho. There is insufficient evidence conclude that the sample mean point-spread error for all games differs from 0. OC. Do not reject Hg. There is insufficient evidence to conclude that the true mean point-spread error for all games differs from 0. OD. Do not reject Hg. There is sufficient evidence to conclude that the sample mean point-spread error for all games differs from 0.
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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I'm confused about how to calculate the test statistic Z and the P value.
Transcribed Image Text:The final scores of games of a certain sport were compared against the final point spreads established by odds makers. The difference between the game outcome and point spread (called a point-spread error) was calculated for 225 games. The mean error is x= - 1.1. The population
standard deviation of the point-spread error o= 14.4. Use this information to test the hypothesis that the true mean point-spread error for all games differs from 0. Conduct the test at a= 0.01 and interpret the result.
Determine the null and alternative hypotheses. Choose the correct answer below.
O A. Ho: Ho = 0
Ha: Ho #0
O B. Ho: Ho 2 0
Hạ: Ho < 0
O D. Ho: Ho s0
O C. Ho: Ho #0
Ha: Ho = 0
Hg: Ho > 0
The test statistic Z= (Round to two decimal places as needed.)
The p-value =
(Round to three decimal places as needed.)
What is the appropriate conclusion at a= 0.01?
A. Reject Ho. There is sufficient evidence to conclude that the true mean point-spread error for all games differs from 0.
B. Reject H,. There is insufficient evidence to conclude that the sample mean point-spread error for all games differs from 0.
C. Do not reject Hn. There is insufficient evidence to conclude that the true mean point-spread error for all games differs from 0.
O D. Do not reject H,. There is sufficient evidence to conclude that the sample mean point-spread error for all games differs from 0.
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