Question: 4. Calculate two confidence intervals and explain what they indicate. a. First, calculate a 95 percent confidence interval for the sample mean. b. Then calculate

4. Calculate two confidence intervals and explain what they indicate.

a. First, calculate a 95 percent confidence interval for the sample mean.

b. Then calculate a 99 percent confidence interval for the difference between the sample mean and the population mean, assuming the population mean is actually 20 hours of bike riding per year.

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