Eight male and eight female college students who have credit cards were surveyed

1. Eight male and eight female college students who have credit cards were surveyed and asked their total credit card debt.  The responses are given below in dollars:

Males: 1000, 2100, 900, 1200, 1300, 500, 1400, 700

Females: 1300, 500, 2000, 1800, 1300, 1000, 2600, 1400

      Researchers wanted to determine if there is a difference in the mean credit card debt owed by males versus females.  Using α = 0.10, is there a difference.  (Show all six steps of hypothesis testing.)

1. 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 July 2008.) 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.)