answer all questions with explanation

(1 point) Test the claim that the population of sophomore college students has a mean grade point average of 2.25 versus a mean grade point average greater than 2.25. Sample statistics include / = 21. x = 2.38, and s = 0.9. Use a significance level of a = 0.01. The test statistic is The critical value is The final conclusion is A. There is sufficient evidence to support the claim that the mean grade point average is greater than 2.25. B. There is not sufficient evidence to support the claim that the mean grade point average is greater than 2.25