1) Suppose that wait times at a dentist's office follow an Exponential distribution, with an expected wait time of 28 minutes. Round answers to one decimal if needed. To ensure accuracy, keep the decay parameter as a fraction (don't round) when doing calculations. a. What percent of patients wait more than 23 minutes? b. What is the percentile of a 29 minute wait? c. Find the 70th percentile of wait times.