Suppose thirty-four communities have an average of 141.6 reported cases of larceny per year. Assume that o is known to be 36.4 cases per year. Find a 75%, 80%, and 95% confidence interval for the...

Extracted text: Suppose thirty-four communities have an average of 141.6 reported cases of larceny per year. Assume that o is known to be 36.4 cases per year. Find a 75%, 80%, and 95% confidence interval for the population mean annual number of reported larceny cases in such communities. a) Compute the margins of error for each confidence intervals. Round your answers to one decimal place. b) As the confidence level increase, do the margins of error increase?