A normal random variable has mean 0 and standard deviation


1. A normal random variable has mean 0 and standard deviation 4. Find the probability that the random variable will be above 2.5.

2. Let X be a normally distributed random variable with mean µ = 16 and standard deviation σ = 3. Find P(11 < X < 20). Also find P(17 < X < 19) and P(X > 15).

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Basic Statistics: A normal random variable has mean 0 and standard deviation
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