Hypothesis Testing Section 8.1 - 8.2 Problem Statistics students believe that the mean score on the first statistics test is 65. A statistics instructor thinks the mean score is higher than 65. He samples ten statistics students and obtains the scores 65 65 70 67 66 63 63 68 72 71. He performs a hypothesis test using a 5% level of significance. The data are assumed to be from a normal distribution. a. Use your calculator to determine appropriate statistics for this problem. Go to "Stat" and "Edi to innuit the data linder lint 1 Them Subtitle Paragraph Styles h. Determine the test statistic. Use one of the formulas (based on your answer to part f)): z = ort= - You can also find this value by using your calculator app: On the TI-83 or 84, go to "Stats", then "Tests". Use either Z-test or T-test. Since you are given the "stats", use the "stats" option to enter the information from this problem. i. Determine the p-value. The p-value is the area under the curve from the test statistic to the end of the curve. You can get this result from using the calculator app as mentioned in part h