The makers of a soft drink want to identify the average age of its consumers. A...

The makers of a soft drink want to identify the average age of its consumers. A sample of 25 consumers was taken. The average age in the sample was 32 years with a sample standard deviation of 5 years. Please answer the following questions: a. Construct a 95% confidence interval estimate for the mean of the consumers’ age. b. Suppose a sample of 51 was selected (with the same mean and the sample standard deviation). Construct a 95% confidence interval for the mean of the consumers’ age

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Expert Solution

Answer a)

A 95% confidence interval estimate for the mean of the consumers’ age is (29.936, 34.064)

Answer b)

A 95% confidence interval estimate for the mean of the consumers’ age is (30.594, 33.406)

orchestra answered 1 year ago

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