Question

Recall that Table 1.7 presents the satisfaction ratings for the XYZ- Box game system that have been given by 65 randomly selected purchasers. Figures 3.8 and 3.11(a) give the MINITAB and Excel outputs of statistics describing the 65 satisfaction ratings
In fig 3.8
In fig 3.11(a)
a. Find the sample mean on the outputs. Does the sample mean provide some evidence that the mean of the population of all possible customer satisfaction ratings for the XYZ- Box is at least 42? (Recall that a “very satisfied” customer gives a rating that is at least 42.) Explain your answer.
b. Find the sample median on the outputs. How do the mean and median compare? What does the histogram in Figure 2.15 tell you about why they compare this way?


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  • CreatedMay 28, 2015
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