Lionel receives an average of 3.0 text messages per minute.Assuming that all the Poisson conditions are met for the random variable "number of text message received in a minute," determine the standard deviation of the random variable "time between text messages" in seconds.
A)10
B)30
C)15
D)34
E)20

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The Answer of Lionel receives an average of 3.0 text messages per minute.Assuming that all the Poisson conditions are met for the random variable "number of text message received in a minute," determine the standard deviation of the random variable "time between text messages" in seconds.
A)10
B)30
C)15
D)34
E)20

Lionel Receives an Average of 3