Question: THE VIDEO GAME SATISFACTION RATING CASE

Recall that “very satisfied” customers give the XYZ-Box video game system a composite satisfaction rating that is at least 42.

? a: Letting μ represent the mean composite satisfaction rating for the XYZ-Box, set up the null and alternative hypotheses needed if we wish to attempt to provide evidence supporting the claim that μ exceeds 42.

The mean and the standard deviation of a sample of n = 65 customer satisfaction ratings are x bar = 42.95 and s = 2.6424. Use a critical value to test the hypotheses you set up in part α by setting α equal to .01. Also, interpret the p-value of .0025 for the test.