The manager of a plant supply store wants to determine whether the mean amount of paint contained in 1 gallon cans purchased from a nationally known manufacturer is actually 1 gallon. You know from the manufacturer's specifications that the standard deviation of the amount of paint is 0.02 gallon. You select a random sample of 50 cans, and the mean amount of paint per 1-gallon can is 0.995 gallon.
A) Is there evidence that the mean amount is different from 1.0 gallon (use α=0.01).