The time between telephone calls to a cable television payment processing center follows an exponential distribution with

Question:

The time between telephone calls to a cable television payment processing center follows an exponential with a mean of 1.5 minutes.
a. What is the probability that the time between the next two calls will be 45 seconds or less?
b. What is the probability that the time between the next two calls will be greater than 112.5 seconds?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...