(1 point) A company that sponsors LSAT prep courses would like to be able to claim that their courses improve scores by

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1 Point A Company That Sponsors Lsat Prep Courses Would Like To Be Able To Claim That Their Courses Improve Scores By 1 (110.18 KiB) Viewed 27 times

(1 point) A company that sponsors LSAT prep courses would like to be able to claim that their courses improve scores by more than 3 percentage points. To test this, they take a sample of 8 people, have each take an initial diagnostic test, then take the prep course, and then take a post-test after the course. The (paired) test results are below (scores are out of 100%): Person Initial Test Post-Test 60 68 71 69 3 73 87 ON 85 mn仍nume & 71 64 5 6 77 72 79 75 7 70 8 68 83 Is there evidence, at an a = 0.1 level of significance, to conclude that the prep course improves scores by more than 3 points? Carry out an appropriate hypothesis test, filling in the information requested. (Arrange your data so that the standardized test statistic is for the change from the initial test to the post-test.) (a) The value of the standardized test statistic: Note: For the next part, your answer should use interval notation. An answer of the form (-0, a) is expressed (-infty, a), an answer of the form (6,) is expressed (b, infty), and an answer of the form (-0, a) u (b, ) is expressed (-infty, a)U(b, infty). (b) The rejection region for the standardized test statistic: (C) Your decision for the hypothesis test: O A. Do Not Reject H . OB. Reject H. OC. Reject H1 OD. Do Not Reject H.