Construct a confidence interval for the population

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Reference no: EM132195700

The waiting times? (in minutes) of a random sample of 22 people at a bank have a sample standard deviation of 3.6 minutes. Construct a confidence interval for the population variance σ2 and the population standard deviation σ. Use a 95 % level of confidence. Assume the sample is from a normally distributed population.

a. What is the confidence interval for the population variance σ2??. (Round to one decimal place.) Interpret the results.

b. What is the confidence interval for the population standard deviation sσ??. (Round to one decimal place.) Interpret the results

Reference no: EM132195700

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