An Alarm Company Reports That the Number of Alarms Sent $\lambda = 4.7$

Multiple Choice

An alarm company reports that the number of alarms sent to their monitoring center from customers owning their system follow a Poisson distribution with $\lambda = 4.7$ alarms per year. Identify the mean and standard deviation for this distribution.

A) mean $= 2.17$ , standard Deviation $= 4.7$
B) mean $= 4.7$ , standard Deviation $= 4.7$
C) mean $= 2.17$ , standard Deviation $= 2.17$
D) mean $= 4.7$ , standard Deviation $= 2.17$