Mathematics, 07.04.2020 20:32 lucy773
Based on the information from Consumer Reports, a random sample of 86 thirty-gram servings of Duncan Hines Chocolate Chip Cookies had a sample means of 132 calories with a sample standard deviation of 27 calories. A random sample of 75 Pepperidge Farm Chocolate Chip Cookies has a sample mean of 124 calories with sample standard deviation of 33 calories. Build an 80% confidence interval for the true mean difference in calories for these two cookie brands.
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Based on the information from Consumer Reports, a random sample of 86 thirty-gram servings of Duncan...
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