The random variable x can be adequately approximated by an exponential probability distribution with = 2.

Question:

The random variable x can be adequately approximated by an exponential probability with θ = 2. Find the probability that x assumes a value
a. More than three standard deviations from μ.
b. Less than two standard deviations from μ.
c. Within half a standard deviation of μ.
Distribution
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