In a study it was found that the average age of cable TV shoppers was 48 years. Suppose you want to test the null hypothesis, H0: μ=48, using a sample of n=70 cable shoppers
a. Find the p-value of a two-tailed test if x=49.1 and s=6.8
b. Find the p-value of a an upper-tailed test if x=49.1 and s=6.8