Determine the probablilty that x=5 people will enter in the next minute.
The formula given is p(x) 4^x e^-4/ x!
where x!= x* (x-1)*(x-2).......3*2*1
the formula for p(x) you posted must be related to some defined conditions. a p of .15 is high. it could be true in a school office given school population and average daily traffic but the p of this event for visitors coming to my house in the next minute is close to zero. what were your conditions?