In Problem 7.46, suppose that the mean amount of juice squeezed is 5.0 ounces.
a. What is the probability that the sample mean amount of juice will be at least 4.60 ounces?
b. The probability is 70% that the sample mean amount of juice will be contained between what two values symmetrically distributed around the population mean?
c. The probability is 77% that the sample mean amount of juice will be greater than what value?
In problem
An orange juice producer buys oranges from a large orange grove that has one variety of orange. The amount of juice squeezed from these oranges is approximately normally distributed, with a mean of 4.70 ounces and a standard deviation of 0.40 ounce. Suppose that you select a sample of 25 oranges.