Folgers has specified that the average amount of coffee that goes into one of their small coffee cans is not to exceed 13.24 ounces. A quality control inspector for Folgers takes a random sample of 16 cans and found the average to be 13 ounces with a variance of 0.25 ounces2. Test the hypothesis that the Folgers filling machines are not exceeding the specified limit at α=0.1.
Find the upper limit for the p-value.
The answer should be equal to 0.975. Please tel me how to get to this answer not using excel or a calculator. Thanks