suppose a batch of metal shafts produced in a manufacturing company have a variance of 2.25 and a mean diameter of 214 inches. if 78 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sample shafts would be less than 213.8 inches? round your answer to four decimal places.
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suppose a batch of metal shafts produced in a manufacturing company have a variance of 2.25 and a me...
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