Number of Motorcycles

question 160

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

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Definitions:

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