Let X the time between two successive arrivals at the drive up window of a local bank If X has an exponential distribution with 1 (which is identical to a standard gamma distribution with 1), compute the following a The expected time between two successive arrivals b The standard deviation of the time between successive arrivals c P(X 4) d P(2 X 5)

Question: Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential distribution with

Let X = the time between two successive arrivals at the drive-up window of a local bank. If X has an exponential with λ = 1 (which is identical to a standard gamma with α = 1), compute the following:
a. The expected time between two successive arrivals
b. The standard deviation of the time between successive arrivals
c. P(X ≤ 4)
d. P(2 ≤ X ≤ 5)

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