Short Answer
Number of Motorcycles
The probability distribution of a discrete random variable X is shown below,where X represents the number of motorcycles owned by a family.
-{Number of Motorcycles Narrative} Apply the laws of expected value to find the following:
a.E(X2)
b.E(2X2 + 5)
c.E(X − 2)2
Correct Answer:

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a. 2.55
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Correct Answer:
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b...
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