The experimenter in Example 8.6 wondered whether there was a difference in the average daily intakes of dairy products between men and women. He took a sample of n 550 1 adult men and n 550 2 adult women and recorded their daily intakes of dairy products in grams per day. A summary of his sample results is listed in Table 8.5. Construct a 95% confidence interval for the difference in the average daily intakes for men and women. Can you conclude that there is a difference in the average daily intakes?

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Table 8.5 Sample Values for Daily Intakes of Dairy Products Men Women Sample Size 50 50 Sample Mean 756 762 Sample Standard Deviation 35 30