sampsonrn
Oct 20, 2009, 07:51 AM
what is the probability of 4 or more calls to 911 with a poisson distribution with a mean of 11
ballengerb1
Oct 20, 2009, 08:24 AM
More details and may help get you some answers.
galactus
Oct 20, 2009, 11:06 AM
Find the probability of less than 4 and subtract from 1.
P(x)=\frac{{\mu}^{x}e^{-\mu}}{x!}
{\mu}=11
Let x=0, 1, 2, 3, add them up, and subtract from 1.