Determine the Indicated Probability for a Poisson Random Variable with the Given

Multiple Choice

Determine the indicated probability for a Poisson random variable with the given values of $\lambda \text { and } t \text {. }$ $\lambda = 0.9 , t = 3 , P ( \text { Less than } 3 )$

A) 0.6469
B) 0.7141
C) 0.4936
D) 0.5064