Pt 6

12. (10 points) A real estate agent claims that the mean household incomes one neighborhood (first) is lower than for the other (second). The mean income of 12 randomly selected households from the first neighborhood was 50,145 with a standard deviation of 9,600. In the second neighborhood, 10 randomly selected households had a mean income of 55,574 with a standard deviation of 7,854. Assume normal distributions and equal population variances and test the claim at a = 0.05