The listing price of a random sample of two-year-old Honda Civics was obtained for four cities in the United States. (Source: www.cars.com, accessed April 2018.) The data are summarized in the table below. Assume that prices of two-year-old Honda Civics are normally distributed. At the 5% significance level, is there a difference in the price of the cars in these cities? (Show all six steps of hypothesis testing.)
Chicago 16000 18980 21480 14999 23541 18100
Los Angeles 18915 16748 18980 16173 18667
New York 15500 13888 18880 12974 22395 22395
Honolulu 19998 17999 18988 20999