Thirty-two small communities in Connecticut (population near 10,000 each) gave an average of x = 139.5 reported cases of larceny per year. Assume that o is known to be 44.5 cases year. (a) Find 90% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.) lower limit upper limit margin of error (b) Find a 95% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.) lower limit upper limit margin of error (c) Find a 99% confidence interval for the population mean annual number of reported larceny cases in such communities. What is the margin of error? (Round your answers to one decimal place.) lower limit upper limit margin of error (d) Compare the margins of error for parts (a) through (c). As the confidence levels increase, do the margins of error increase? O As the confidence level increases, the margin of error increases. As the confidence level increases the margin of error remains the same

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