Kevin’s age can be represented by the expression 12p3. jake’s age can be represented by the expression 4p5. what is the ratio of kevin’s age to jake’s age?

Calculate the mean value (expected value) of the following discrete variable x (10 points): x = 0, 1, 2, 3, 4, 5, 6 p(x) = 0.2, 0.2, 0.15, 0.15, 0.15, 0.1, 0.05