The time between arrivals at an ATM machine follows an exponential distribution with $\theta = 10$ minutes. Find the mean and standard deviation of this distribution.
A) Mean $= 10$, Standard Deviation $= 10$
B) Mean $= 10$, Standard Deviation $= 100$
C) Mean $= 3.16$, Standard Deviation $= 3.16$
D) Mean $= 10$, Standard Deviation $= 3.16$

Question

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The Answer of The time between arrivals at an ATM machine follows an exponential distribution with $\theta = 10$ minutes. Find the mean and standard deviation of this distribution.
A) Mean $= 10$, Standard Deviation $= 10$
B) Mean $= 10$, Standard Deviation $= 100$
C) Mean $= 3.16$, Standard Deviation $= 3.16$
D) Mean $= 10$, Standard Deviation $= 3.16$

The Time Between Arrivals at an ATM Machine Follows an Exponential