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Question 25 3 pts We wish to test the hypotheses HO: / = 80 versus H1: / / 80 at a 14% level of significance. Here / denotes the average score X on a standardized test for students who have taken a preparation course for the exam. These hypotheses will be (x-80) tested by obtaining a random sample of 600 student scores. If TS denotes the test statistic where s is the sample 600 standard deviation of the 600 student scores, then the rejection rule may be stated as: O Reject u = 80, if TS > 1.96 O Reject u = 80, if TS > 1.75 or TS 1.48 or TS 1.75 or TS 1.48 or TS