Business Stats
posted by John Barclaey .
A busy restaurant determined that between 6:30 P.M. and 9:00 P.M. on Friday nights, the arrivals of customers are Poisson distributed with an average arrival rate of 4.32 per minute.
What is the probability that at least 1 minute will elapse between arrivals?
Round answer to 4 decimal places.
I know lambda is 4.32 so then do I just plug in 0 for x, get that solution and subtract that from 1.0?

You are correct! Plug in 0 for x and subtract from 1.