Question

For each exercise, answer the following along with any additional questions. Assume group variances are equal (unless the problem is ran via statistical software). |  Provide the null and alternative hypotheses in formal and plain language for appropriate two-tailed test (viz., dependent or independent) at the 0.05 significance level  Do the math and reject/accept null at a=.05. State your critical t value.  Explain the results in plain language.  Calculate the 95% confidence interval for the difference in means and state both formally and in plain language if appropriate.

A local Alcoholics Anonymous chapter normally holds meeting at 5:45. Some similarly sized chapters think 6:45 will increase attendance. They take a random of ten chapters with bimonthly meeting starting times of 5:45 and eleven with 6:45 bimonthly meetings from the Fall of last year. Is there a difference in attendance? (C11PROB2.SAV)

5:45 : 90, 80, 70, 80, 70, 70, 70, 70, 80, 70

6:45 : 80, 60, 70, 90, 60, 70, 60, 50, 50, 70

Answer 1