Question
(1 point) Test the claim that the population of sophomore college students has a mean grade...
(1 point) Test the claim that the population of sophomore
college students has a mean grade point average of 2.252.25 versus
a mean grade point average greater than 2.252.25. Sample statistics
include n=23, x¯=2.4, and s=0.8. Use a significance level of
α=0.01.
The test statistic is
The critical value is
The final conclusion is
A. There is not sufficient evidence to support the
claim that the mean grade point average is greater than 2.25.
B. There is sufficient evidence to support the
claim that the mean grade point average is greater than 2.25.
Homework Answers
Answer #1
a) Test statistic 
= 0.90
b) Critical value = t0.01,22 = 2.508
c) Since test statistic is not more than critical value, we should not reject the null hypothesis.
Option-A) There is not sufficient evidence to support the claim that the mean grade point average is greater than 2.25.
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