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A food chemist analyzed the calorie content for a popular type of chocolate cookie. The sample was of 8 cookies. The average was 115.375 and

A food chemist analyzed the calorie content for a popular type of chocolate cookie. The sample was of 8 cookies. The average was 115.375 and the sample standard deviation use 2.8253.

a.) Construct a 99% confidence interval for the population mean.

b.) Construct a 99% confidence interval for the population variance and standard deviation.

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