Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 4 minutes. Determine the probability that the child must wait between 3 and 6 minutes on the bus on a given morning. a) O 0.2508 b) 0.4492 c) O 0.2492 d) 0 0.7508 e) O 0.4724 f) ONone of the above Review