Hint(s) Check My Work (No more tries available) At Western University the historical mean of scholarship examimation scores for freshman applicatioris is 900. A historical population standard deviation o = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed, a. State the hypotheses. Ho: a equal to 900 H: p not equal to 900 b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean of = 935 (to the nearest whole number)? 910.05 959.94 ) C. Use the confidence interval to conduct a hypothesis test. Using a= 0.05, can the assistant dean concllude that the mean examination score for the new freshman applications has changed? Yes d. What is the p value (to 4 decimals)? (Use Table 1 from Anlandix E.) 0.0060 Hintish Check My Work (No more tries available)
Hint(s) Check My Work (No more tries available) At Western University the historical mean of scholarship examimation scores for freshman applicatioris is 900. A historical population standard deviation o = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed, a. State the hypotheses. Ho: a equal to 900 H: p not equal to 900 b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean of = 935 (to the nearest whole number)? 910.05 959.94 ) C. Use the confidence interval to conduct a hypothesis test. Using a= 0.05, can the assistant dean concllude that the mean examination score for the new freshman applications has changed? Yes d. What is the p value (to 4 decimals)? (Use Table 1 from Anlandix E.) 0.0060 Hintish Check My Work (No more tries available)
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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Transcribed Image Text:Hint(s) Check My Work (No more tries available)
At Western University the historical mean of scholarship examimation scores for freshman applicatioris is 900. A historical population standard
deviation o = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination
score for the new freshman applications has changed.
a. State the hypotheses.
Ho: u equal to 900
H: p not equal to 900
b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample
mean of =935 (to the nearest whole number)?
( 910.05
959.94 )
C. Use the confidence interval to conduct a hypothesis test. Using a= 0.05, can the assistant dean conclude that the mean examination score
for the new freshman applications has changed?
Yes
d. What is the p-value (te 4 decimals)z (Use Table 1 from Anbent x B.)
0.0060
Cheek My Work (No more tries available)
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