A machine used to fill gallon-sized paint cans is regulated so that the amount of paint dispensed has a mean of 137 ounces and a standard deviation...

A machine used to fill gallon-sized paint cans is regulated so that the amount of paint dispensed has a mean of 137

ounces and a standard deviation of 0.20

ounce. You randomly select 40

cans and carefully measure the contents. The sample mean of the cans is 136.9

ounces. Does the machine need to be reset? Explain your reasoning.