F(x) is c.d.f. of discrete r.v. X whose p.m.f. is given by P(x) = "k"^4C_x , for x = 0, 1, 2, 3, 4 and P(x) = 0 otherwise then F(5) = _______

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F(x) is c.d.f. of discrete r.v. X whose p.m.f. is given by P(x) = "k"^4C_x , for x = 0, 1, 2, 3, 4 and P(x) = 0 otherwise then F(5) = 1 Explanation: Given, P(x) = "k"^4C_x, for x = 0, 1, 2, 3, 4. = 0, otherwise. $\therefore$ f(5) = P(X $\leq$ 5) = P(X $\leq$ 4) + P(X = 5) = 1 + 0 = 1.

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