What is the expected number of service calls

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Expected value, variance and standard deviation.

A volunteer ambulance service handles 0 to 5 service calls on any given day.  The probability distribution for the number of service calls is as follows

Number of Service Calls


Number of service calls














a)    What is the expected number of service calls?

b)   What is the variance in the number of service calls?  What is the standard deviation?

Reference no: EM1319185


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