( 1 point) Generate two random numbers between 0 and 1 and take X to be their sum. The sum X can take any value between 0 and 2 . The density curve of X is the triangle shown in Figure 10.7 (p. 275) of the 6th edition of Moore, Notz and Fligner. (a) What is the probability that X is less than 1.8 ? (b) What is the probability that X is less than 0.2 ? (a) (b) .