2. Recall that "very satisfied" customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the manufacturer of the XYZ-Box wishes to use the random sample of 62 satisfaction ratings to provide evidence supporting the claim that the mean composite satisfaction rating for the XYZ-Box exceeds 42. (a) Letting represent the mean composite satisfaction rating for the XYZ-Box, set up the null hypothesis Ho and the alternative hypothesis Ha needed if we wish to attempt to provide evidence supporting the claim that exceeds 42. tu (b) The random sample of 62 satisfaction ratings yields a sample mean of x=42.990x=42.990. Ifo equals 2.69, use critical values to test Ho versus H at each of a = .10, .05, .01, and .001. (Round your answer z.05 to 3 decimal places and other z-scores to 2 decimal places.) (c) Using the information in part (b), calculate the p-value and use it to test Ho versus Ha at each of a .10, .05, .01, and .001. (Round your answers to 4 decimal places.) (d) How much evidence is there that the mean composite satisfaction rating exceeds 42? s/sartn