Question: data set is normally distributed with mean 171 and standard deviation 20. If the data set contains 550 data values, approximately how many of the

data set is normally distributed with mean 171 and standard deviation 20. If the data set contains 550 data values, approximately how many of the data values will fall within the range 141 to 221?

A.421

B.375

C.281

D.510

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