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A random variable is normally distributed with a mean of 15 and a standard deviation of...

A random variable is normally distributed with a mean of 15 and a standard deviation of 2.5.

  1. Find P(X > 20)

  2. Find P(X < 16.25)

  3. Find P(13.125 < X < 17)

Math   Statistics-And-Probability   
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