A food service director for a national corporation suspects that people are more likely to order salads on Monday, so they can make up for eating poorly over the weekend. They took a random sample of 850 cafeteria reports from the past several months and identified the number of salads sold on each day. Here are the results: Day Monday Tuesday Wednesday Thursday Friday Number of 192 151 148 152 207 Salads Sold a. Carry out a test of significance to determine if salad sales are not uniformly distributed across the days of the week. b. Comment in plain terms on the food service director's suspicion.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.