Question: 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

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 200 milliliters and a standard deviation of 8 milliliters. The machine is checked periodically by taking a sample of 4 drinks and computing the average content. If x falls in the interval 194
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