Test the claim that the mean GPA of night students is significantly different than 2.7 at the 0.2 significance level.
Test the claim that the mean GPA of night students is significantly different than 2.7 at the 0.2 significance level.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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claim : we wants to test that mean GPA of night student is different than 2.7
given information:
sample mean=2.75
sample standard deviation ( s ) =0.02
sample size=40
level of significance = 0.2
hence based on the claim null and alternative hypothesis is :
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