Given the normally distributed variable X with mean 20 and

Last updated: 8/14/2022

Given the normally distributed variable X with mean 20 and standard deviation 2.5, find (a) P(X<14); (b) the value of k such that P(X<k) = 0.1894; (c) the value of k such that P(X> k) = 0.2327; (d) P(17<X<22).