'_-..-_.._ -. (Continuous) random variable, X has the density function 2(1m), {01'0ng 1 RT) = { U, elsewhere (9.) Sketch the graph of this p.d.f. (1)) Determine and Sketch the graph of the distribution function of X. (c) Find 1. PH) 5 X S 0.5) ii. P(0.25 S X S 0.75) iii. P(X = 0.75) iv. P(X Z 0.75)