Complete solution please.

Direction: Solve the following problems: 61-70. A sales representative of a certain pain reliever claims that the effect would last for 6 hours. A survey from 15 randomly selected workers using the same pain reliever shows that it has an average effect of 5.3 hours with a standard deviation of 1.2 hours. Is the claim of the sales representative true? Use a = 5% and use a one- tailed test. 71-80. The data for seven participants giving their number of years in college (x) 0,1,2,3,4,5,6, and their subsequent yearly income (y) 15, 15, 20, 25, 30, 35, 36. Income here is in thousands of pesos, but this fact does not require any changes in our computations. Test whether there is a relationship with alpha = 0.05 (Use the Pearson r correlation)