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A normal distribution of data points has a mean of 15 and a standard deviation of 5. In this data set above, what is the

A normal distribution of data points has a mean of 15 and a standard deviation of 5.

In this data set above, what is the probability that a data point is 7 or less?

(a) 4.5% (b) 0.095 (c) 0.055 (d) 55%

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