Ricky is filling an 8-inch by 4-inch by 4 1/2 inch rectangular box with cubes. the cube come in two different sizes, 1 cubic inch and 1/8 cubic inch. he uses some of each size cube and he packs the box so there are no gaps. what is the least smaller subs that ricky can use
a.)32
b.)64
c.)128
d.)256

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

-2x-4

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