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.