The manager of a paint supply store wants to determine if the mean amount of paint contained in 1- gallon cans purchased from a nationally known...

The manager of a paint supply store wants to determine if the mean amount of paint contained in 1- gallon cans purchased from a nationally known manufacturer is actually not equal to 1-gallon. It is known that for this manufacturer the population standard deviation of the amount of paint is equal to 0.02 gallons. A random sample of 72 cans is selected, and the mean amount of paint per 1-gallon can is 0.99552 gallons. Use a significance level of 0.01. what is the test statistic?