5.5 Suppose x is a random variable best described by a uni- form probability distribution with c = 2 and d = 4. a. Find f(x). b. Find the mean and standard deviation of x. c. Find P( u - o = x = uto). d. Find P(x > 2.78). e. Find P( 2.4 a) = .5 b. P(x = a) = .2 c. P(x = a) = 0 d. P( 2.5 = x = a) = .5