A manufacturer knows that their items have a normally distributed length, with a mean of 8.7 inches, and standard deviation of 2.2 inches. If 13 items are chosen at random, what is the probability that their mean length is less than 8.2 inches?
A manufacturer knows that their items have a normally distributed length, with a mean of 8.7 inches, and standard deviation of 2.2 inches. If 13 items are chosen at random, what is the probability that their mean length is less than 8.2 inches?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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