Question: Suppose x is a normally distributed random variable with a mean of 50 and a standard deviation of 5. Compute the following probabilities. P(x 45)

Suppose x is a normally distributed random variable with a mean of 50 and a standard deviation of 5. Compute the following probabilities.

P(x 45)

P(45 x 55)

P(x 55)

The ages of students at a university are normally distributed with a mean of 21. What percentage of the student body is at least 21 years old?

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