f(x), a continuous probability function, is equal to 1/20 , and the function is restricted to 3 ≤ x ≤ 23. What is  P (3 < x <23)?

Which statements below are true for a cumulative distribution function (cdf), F(x)?     F(x) is a probability.     F(x) is non-decreasing.     The total area under F(x) is equal to 1.     The maximum value of F(x) is 1.     F(x) is non-negative.

Use the Mean Value Theorem and find all possible values of c on the given interval. f(x) = 4x1/3, [0, 1] %3! C = 3/2 0.19 C= 4 3/2 0.77 O c-0.33 C = C = 4 1/3 1//3

The joint p.d.f. of the r.v.'s X and Y is given by fx,y(x, y) = [(x + y²), 0 ≤ x ≤ 1,0 ≤ y ≤ ¹, 0, otherwise.