Crime Rate: FBI A random sample of n1 510 regions in New England gave the following violent crime rates

(per million population).

x1: New England Crime Rate 3.5 3.7 4.0 3.9 3.3 4.1 1.8 4.8 2.9 3.1 Another random sample of n2 512 regions in the Rocky Mountain states gave the following violent crime rates (per million population).

x2: Rocky Mountain States 3.7 4.3 4.5 5.3 3.3 4.8 3.5 2.4 3.1 3.5 5.2 2.8

(Reference: Crime in the United States, Federal Bureau of Investigation.) Assume that the crime rate distribution is approximately normal in both regions.

(i) Use a calculator to verify that, x1 ø 3.51, s1 ø 0.81, x2 ø 3.87, and s2 ø 0.94.

(ii) Do the data indicate that the violent crime rate in the Rocky Mountain region is higher than that in New England? Use a 5 0.01.

AppendixLO1