A Starbucks Trenta is a 31oz beverage filled with America's favorite coffee. It is believed by some that the Trenta cup does not hold exactly 31 ounces, that it may be different. Forty-five random Starbucks drinkers were asked to have their Trenta beverage measured before drinking. It was found that the average weight was 30.2 ounces with a standard deviation, sx = 1.12 and has a Normal distribution. Do you disagree with Starbucks claim that they serve 31oz drinks in their Trenta cup