I am trying to calculate P(x>=3) using R. What I wrote is the following;
ppois(3,4.5) #this returns 0.342296
the problem here is that the value is for (Px<=3). I know that including "lower = FALSE" will return P(X>3)
ppois(3,4.5,lower=FALSE) #This returns 0.657704 which is P(X>3)
What would I have to modify or include to return P(X>=3)?