A population of scores is normally distributed with a mean of 100 and a standard deviation of 20. Approximately percent of the scores fall in the interval between 100 and 140.
A)48
B)34
C)68
D)84

Question

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The Answer of A population of scores is normally distributed with a mean of 100 and a standard deviation of 20. Approximately percent of the scores fall in the interval between 100 and 140.
A)48
B)34
C)68
D)84

A Population of Scores Is Normally Distributed with a Mean