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Statistics - Mean, Null & Alternative Hypothesis

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1) Recall that "very satisfied" customers game system a rating that is at least 42. Suppose that the manufacturer of the XYZ- box wishes to use the 65 satisfaction ratings to provide evidence supporting the claim that the mean composite satisfaction rating for the XYZ=box exceeds 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.

b) in the context of this situation, interpret making a Type I error; interpret making a Type II error.

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(a) H0: The mean composite satisfaction rating of the box is 42. That is, m = 42

H0: The mean ...

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