A restaurant asked a random sample of its weeknight customers to rate their food on the following scale: 1––excellent, 2––good, 3––fair, 4––poor, 5––awful. Another random sample of weekend diners was asked to rate their food. The results are shown in Exhibit 10.18.At the 5% level of significance, is there evidence that weekend and weeknight diners rate the restaurant's food differently?
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