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 and variance to find the following:
a. V( 3 X)
b. V (3 X - 2)
c. V( 3 )
d. V( 3 X)- 2
Correct Answer:
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a. 8.89
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Correct Answer:
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