Evaluate the cumulative distribution function, f, for the given random variable, x, at specified values: also determine the requested probabilities. f(x) = (125/31) (1/5)^x, x = 1, 2, 3 give exact answers in form of fraction. f(1) = (2) = (3) = (a) p(x lessthanorequalto 1.5) =) p(x lessthanorequalto 3) =) p(x > 2) =) p(1 < x lessthanorequalto 2) =

Step-by-step explanation:

Given that x is a random variable with probability density function given as

To find cumulative function for x

F(1) =

F(2) =

F(3) =

a) P(X lessthanorequalto 1.5)

=

(b) P(X lessthanorequalto 3) =__F(3) = 1_________

(c) P(X > 2) =__f(3) = 1/31________

(d) P(1 < X lessthanorequalto 2) =__f(2) = 25/31____

answer: ouch. thats difficult

step-by-step explanation:

answer is the third choice:

3x^5+4x^4+x^3+2x^2-10x-7=0

step-by-step explanation: