所屬科目：研究所、轉學考(插大)◆統計學
2.Suppose that the score of a final exam come from a class with a mean score of 70 and a variance of 25. What is a diagnostically meaningful cutoff if you want to identify the students who score in the highest 5% of the class? () (10%)
(2) Is there statistical evidence at the significance level of 0.05 to claim that study hours and grades are positively cortelated? ) (15%)
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) (10%)
) (15%)