Answered: At Western University the historical…

Name: At Western University the historical mean of scholarship examination s
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Description: At Western University the historical mean of scholarship examination scores for freshman applications is 900 . A historical population standard deviation 0`=180 is assumed known. Each year, the assistant dean uses a sample of applications to determin

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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At Western University the historical mean of scholarship examination scores for freshman applications is 900 . A historical population standard deviation 0`=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.

What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean 935 (to the nearest whole number)? (2 blanks)

Use the confidence interval to conduct a hypothesis test. Using 0c = 0.05 , can the assistant dean conclude that the mean examination score for the new freshman applications has changed?
What is the -value (to 3 decimals)?

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