Help please hurry I don’t have much time!!!

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Explain how you can use the associative property to evaluate (7x50)x4.

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false