Given an exponential distribution with =20, what is the probability that the arrival time is a. less than X=0.2? b. greater than X = 0.2? c. between X=0.2 and X 0.3? d. less than X=0.2 or greater than X = 0.3? a. P(Arrival time 0.2)= .0183 (Round to four decimal places as needed.) c. P(0.2 0.3)= (Round to four decimal places as needed.)