If 84 shafts are sampled at random what is the probability


Suppose metal shafts produced have a standard deviation of 2.8 and a mean diameter of 210 inches. If 84 shafts are sampled at random, what is the probability that the mean diameter of the sample shafts would be less than 209.7 inches?

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Basic Statistics: If 84 shafts are sampled at random what is the probability
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