The mean income per person in the United States is $40,500, and the distribution of incomes follows a normal distribution. A random sample of 18 residents of Wilmington, Delaware, had a mean of $51,500 with a standard deviation of $10,200. At the 0.050 level of significance, is that enough evidence to conclude that residents of Wilmington, Delaware, have more income than the national average?

**State the null hypothesis and the alternate hypothesis.****State the decision rule for 0.050 significance level.****(Round your answer to 3 decimal places.)**

#### Top Answer

1. The hypotheses are: H 0 : μ = 4 0 5 0 0 H a : μ > 4 0 5... View the full answer

#### Sign up to view the full answer

#### Other Answers

1) null hypotheiss, ho: residents of Wilmington, Delaware, have more income than the... View the full answer