Understanding Basic Statistics 6th Edition by Charles Henry Brase,Corrinne Pellillo Brase

تمرين 119

Vending Machine: Soft Drinks A vending machine automatically pours soft drinks into cups. The amount of soft drink dispensed into a cup is normally distributed with a mean of 7.6 ounces and standard deviation of 0.4 ounce. Examine Figure 7-3 and answer the following questions.
(a) Estimate the probability that the machine will overflow an 8-ounce cup.
(b) Estimate the probability that the machine will not overflow an 8-ounce cup.
(c) The machine has just been loaded with 850 cups. How many of these do you expect will overflow when served