If `f(x)={{:((e^(-x)","0ltxltoo),(0", otherwise"):}`, then

The p.d.f. of a r.v. X is f(x)={{:(kx^(2)(1-x)","0ltxlt1),(0", otherwise"):} , then k =

The p.d.f. of a r.v. X is f(x)={{:((1)/(x^(2))","1ltxltoo),(0", otherwise"):} , then F (x) =

The p.d.f. of a r.v. X is f(x)={{:(3(1-2x^(2))","0ltxlt1),(0", otherwise"):} , then F (x) =

The p.d.f. of a continuous r.v. X is f(x)={{:((x)/(8)","0ltxlt4),(0", otherwise"):} , then F (0.5) =

The p.d.f. of a r.v. X is f(x)={{:("ke"^(-thetax)","0lexltoo),(0", otherwise"):} , then k =

The p.d.f. of a continuous r.v. X is f(x)={{:((x)/(8)", "0ltxlt4),(0", otherwise"):} , then F (x) =

The p.d.f. of a continuous r.v. X is f(x)={{:((x)/(8)","0ltxlt4),(0", otherwise"):} , then F (1.7) =

The p.d.f. of a continuous r.v. X is f(x)={{:((x)/(8)","0ltxlt4),(0", otherwise"):} , then F (5) =

The p.d.f. of a r.v. X is f_(X)(x)={{:(kx(1-x)","0ltXlt1),(0", otherwise"):} , then k =

The p.d.f. of a r.v. X is f(x)={{:("ke"^(-thetax)","0lexltoo),(0", otherwise"):} , then P(0ltXltM)=(1)/(2) , if M =