Which values are solutions to x > 10? A. x = 0 and x = 20
B. x = -12 and x = 0
C. X = 12 and x = 20
D. X = 11 and x = 5

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.