Question

Question1 10 pts Suppose 22 communities have an average of x 123.6 reported cases of larceny per year. Assume that is known to be 36.8 cases per year. Find a 90%, 95%, and 98% confidence interval for the population mean annual number of reported larceny cases in such communities. Compare the lengths of the confidence intervals. As the confidence levels increase, do the confidence intervals increase in length? The 90% confidence level has a confidence interval length of 1715; the 95% confidence level has a confidence interval length of 144.3; and the 98% confidence level has a confidence interval length of 121.1. As the confidence level increases, the confidence interval lengths decreases. The 90% confidence level has a confidence interval length of 7.8: the 95% confidence level has a confidence interval length of 6.6; and the 98% confidence level has a confidence interval length of 5.5. As the confidence level increases, the confidence interval length decreases. O The 90% confidence level has a confidence interval length of 121.1: the 95% confidence level has a confidence interval length of 144.3; and the 98% confidence level has a confidence interval length of 171.5. As the confidence level increases, the confidence interval length increases The 90% confidence level has a confidence interval length of 5.5; the 95% confidence level has a confidence interval length of 66; and the 98% confidence level has a confidence interval length of 7.8. As the confidence level increases, the confidence interval lengths increases. O The 90% confidence level has a confidence interval length of 25.8; the 95% confidence level has a confidence interval length of 30.8; and the 98% confidence level has a confidence interval length of 36.6. As the confidence level increases, the confidence interval lengths increases Question 2 10 pts True or false? Every random sample of the same size from a given population will produce exactly

Answer 1

Date.: 636.8 23.G 12.9663 ConFidance noter vest 35 % 6 123. Za 1 845 has a Crnt dance interva, length-30-P | αη4 o gy-Ce n' i dance tenel hees 이 een f dance intent 36.6, As Clin yldance level increased