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To test the effects of a business school preparation course, 6 students took a general business test before and

after the course. The results are given below.

before. after

530. 670

690. 770

910 1000

700. 710

450. 550

820. 880

At the a= 5% level of significance, test the hypothesis that the course improved exam results

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Here we are testing for the before and after test scores thus a paired t-test should be used. Here we want to test the... View the full answer

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