population of manufactured products the mean       length of these items is 36.5 mm with a standard deviation of  3.8 mm. A sample of        n = 54  items is drawn from this population and the length of each item is recorded.         Find the probability that this sample has a mean length between 36.8 and 37.2 mm.   Question 1 options:   .6305   .1033   None of the answers given are correct   .1925   .0395

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