Number of Motorcycles the Probability Distribution of a Discrete Random

question 54

Essay

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 ( X ²)
b. E (2 X ² + 5)
c. E ( X - 2)²

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