Consider the sample of 65 customer satisfaction ratings given in Table 12.12. Carry out a chi-square goodness of fit test of normality for the population of all customer satisfaction ratings. Recall that we previously calculated = 42.95 and s = 2.6424 for the 65 ratings.
TABLE 12.12
A Sample of 65 Customer Satisfaction Ratings

39 46 42 40 45 44 44 445 45 44 46 46 4 41 46 46 38 40 40 41 43 38 48 39 42 39 47 43 43 44 41 42 40 44 39 43 36 41 44 41 42 43 43 4 44 45 42 38 45 45 46 40 44 44 47 42 44 45 45 43 45 44 43