The Time Between Arrivals at an ATM Machine Follows an Exponential

question 60

Multiple Choice

The time between arrivals at an ATM machine follows an exponential distribution with θ = 10 minutes. Find the mean and standard deviation of this distribution.

• A) Mean = 10, Standard Deviation = 3.16
• B) Mean = 10, Standard Deviation = 10
• C) Mean = 10, Standard Deviation = 100
• D) Mean = 3.16, Standard Deviation = 3.16

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