Question: Given the normally distributed variable X with a mean of 20 and standard deviation of 2, find 1. P(X < 16); 2. the value of

Given the normally distributed variable X with a mean of 20 and standard deviation of 2, find 1. P(X < 16);

2. the value of k such that P(X < k) = 0.4090;

3. the value of k such that P(X > k) = 0.8599;

4. P(17 < X < 22).

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