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Let X distributed as a Normal random variable with a mean of 15 and a standard...

Let X distributed as a Normal random variable with a mean of 15 and a standard deviation of 3.

A) What is the probability associated with an outcome between (12, 18)?

B) What is the probability associated with an outcome between (9, 21)?

C) What is the probability associated with an outcome between (12, 21)?

Math   Statistics-And-Probability   
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