The probability distribution of the amount of memory X (GB) in a purchased flash drive is given below. x 1 2 4 8 16 p(x) .05 .10 .35 .40 .10 Compute the following: E(X), E(X2 ), V (X), E(3X 2), E(3X2 2), V (3X 2), E(X 1), V (X 1).

a)

b)

c)

d) E(3X + 2) = 21.35

e)

f) V(3X+2) = 140.832

g) E(X+1) = 7.45

h) V(X+1) = 15.648

Step-by-step explanation:

a)

b)

c)

d)

e)

f)

g)

h)

6 on both sides and twelve on the top and the bottom

step-by-step explanation:

1/4 because there is 4 grades.