Recall that Table 1.7 presents the satisfaction ratings for the XYZ-Box video game system that have been given by 65 randomly selected purchasers. Figure 2.15 gives the Excel output of a histogram of these satisfaction ratings.

a. Describe where the satisfaction ratings seem to be concentrated.
b. Describe and interpret the shape of the distribution of ratings.
c. Write out the eight classes used to construct this histogram.
d. Construct a cumulative frequency distribution of the satisfaction ratings using the histogram classes.

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Composite Scores for the Video Game Satisfaction Rating Case TABLE 1.7 39 45 38 42 42 41 38 42 46 46 45 45 46 43 47 43 41 40 43 42 42 47 43 45 45 40 47 46 43 45 45 45 40 39 40 42 45 41 43 39 43 41 38 43 36 46 39 41