In honour of the author's anniversary, a radio program offers to give an out of print book to the one who calls 100th after the beginning of the broadcast. The calls to the program are modelled by a non-homogeneous Poisson process, and the average number of calls in t hours is (5t)2. Find the probability that the 100th call will be received in no more than 15 minutes (t = 0.25), if the 98th call was made 12 minutes after the beginning of the broadcast. 0.89 0.11 0.076 0.002