GPA	SALARY
3.26	33.80
2.60	29.80
3.35	33.50
2.86	30.40
3.82	36.40
2.21	27.60
3.47	35.30

1. Analyze the distribution of the two variables: GPA, Salary

(sample mean, variance, shape of the distribution )

2. Determine 95% confidence intervals for the population mean of the above variables.

3. For a 5% significance level test the following hypothesis

H0 : mean Salary = 28 against two sided alternative, and both one sided alternatives

H0 : GPA = 2.5 against the two sided alternative, and both one sided alternatives

calculate the corresponding p-values

calculate the power of the above tests for the following alternatives: mean salary= 25, 30, 35 and mean GPA = 3, 3.5, 4

4 Discuss the results