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Question 12 - Math Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score

Question 12 - Math

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Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades |62.7 68.4 68.4 83.2 88 83.2 62.7 74.4 74.4 74.4 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA : Ou > 65 Ou # 65 Ou

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