Car rental rates per day for a sample of seven Eastern U.S. cities are as follows (The Wall Street Journal, January 16, 2004). City Daily Rate Boston $43 Atlanta 35 Miami 34 New York 58 Orlando 30 Pittsburgh 30 Washington, D.C. 36
a. Compute the mean, variance, and standard deviation for the car rental rates.
b. A similar sample of seven Western U.S. cities showed a sample mean car rental rate of $38 per day. The variance and standard deviation were 12.3 and 3.5, respectively. Discuss any difference between the car rental rates in Eastern and Western U.S. cities.