Find the Standard Deviation of the Poisson Random Variable $\lambda$ = 1860 Let X Denote the Number of Calls Received by to Three

question 142

Multiple Choice

Find the standard deviation of the Poisson random variable. Round to three decimal places.
-The number of calls received by a car towing service in an hour has a Poisson distribution with parameter $\lambda$ = 1.860. Let X denote the number of calls received by the service in a randomly selected
Hour. Find the standard deviation of X.

• A)0.930
• B)1.860
• C)1.364
• D)3.460

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