The monthly utility bills in a city are normally​ distributed, with a mean of​$100and a standard deviation of ​$14. Find the probability that a randomly selected utility bill is​ (a) less than​ $65​ (b) between​$83 and​ $100 and​ (c) more than​ $110.

a. The probability that a randomly seleccted utility bill is less than $65 is ______.