Question: An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 117

An automatic machine in a manufacturing process is operating properly if the lengths of an important subcomponent are normally distributed with a mean of 117 cm and a standard deviation of 5.6 cm.

B. Find the probability that if 4 subcomponents are randomly selected, their mean length exceeds 119 cm.

C. Find the probability that if 4 are randomly selected, all 4 have lengths that exceed 119 cm.

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