Problem 1. Find the following probabilities by reducing them to the standard normal distri bution. (a) X N N(1,4), P(X > 1)=? (b) X ~N(0,9), P(|X 3| > 6) =? (c) X ~ N(1, 1), P((2X)2 > 4) =? Note that the second argument of N (,u, 02) is the variance