A mouse has made holes in opposite corners of a rectangular kitchen. The kitchen is 4 meters by 3 meters. If the mouse runs straight from one hole to the other, how far will it run?

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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