Statistics students believe that the mean score on a first statistics test is 65. The instructor think mean score is higher. She samples 10 statistics students and obtains the scores: 69 63.9 68.4 62.7 73.5 73.5 64.3 73.5 96 Grades 69 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA: Ομ < 65 Ομ # 65 Ομ > 65 B. State the mean of the sample: C. State the standard error of the sample means:

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