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 85.5 65 61.9 73.5 96 96 65 85.5 68.4 88 Test grades are believed to be normally distributed. Use a significance level of 5%. A. State the alternative hypothesis: HA: # 65 < 65 > 65 B. State the mean of the sample: 79.60 (Round to two decimal places.) C. State the standard error of the sample means: (Round to four decimal places.) D. State the test statistic: t (Round to four decimal places.) E. State the p-value: (Round to four decimal places.)