Lionel Receives an Average of 3

question 140

Multiple Choice

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