10.3.16 A sofh-trink machine at a steak house is regulated so that the amount of drink...
A soft-drink machine at a steak house is regulated so that the amount of drink dispensed is approximately normally distributed with a mean of 210 milliliters and a standard deviation of 12 milliliters. The machine is checked periodically by taking a sample of 9 drinks and computing the average content. If x falls in the interval 204<x<216, the machine is thought to be operating satisfactorily; otherwise, the owner concludes that u # 210 milliliters. Complete parts (a) and (b) below....