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Exponential
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500.
Mean and Variance of Exponential Distribution
easy
An exponential random variable X has rate parameter λ = 0.5. What are its mean and variance?
A
Mean = 2, Variance = 4
B
Mean = 2, Variance = 2
C
Mean = 0.5, Variance = 0.25
D
Mean = 0.5, Variance = 4
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