Question 1036769
This is a poisson distribution--mean known, rare events, probability proportional to time and theoretically an infinite number could occur.
lambda=0.53
e^(-lambda), lambda^1=e^(-0.53)(0.53)=0.3120--exactly 1
at most 1 is the probability of 0 and probability of 1: 0.5886+0.3120=0.9006.
more than 1 is the complement or 0.0994.