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.

Math   Statistics-And-Probability   
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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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