The number of scooters observed per square mile block, X, at a College, is a random variable that can be modeled by a Poisson pmf with expected value 15 in minutes.

This refers to square mile block. The number of scooters per square mile block

Please help match the probability models on the left hand side that must be used to find the corresponding probabilities on the right hand side.

( = 15, 2=0.25)	?
f(x)=x!15xe15,x=0,1,2,....	?
Poisson(=900)	?

Select choices:

• The probability that in a random sample of 5 blocks, 3 blocks have less than three scooters observed.
• The probability that the average number of scooters in 60 blocks is less than 5.
• The probability that a randomly chosen block has less than 5 scooters.
• The probability that the total number of scooters in 60 blocks is larger than 140