9,10

Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 3 minutes. Determine the probability that the child must wait at least 4 minutes on the bus on a given morning. a) 0.2364 6) 0.4636 c) 0.5636 d) 0 0.5272 e) 0 0.2636 f) O None of the above Review Later Question 10 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 5 minutes on the bus on a given morning. a) 0.1859 b) 0 0.4724 c) 0 0.8141 1) 0 0.3859 e) 0 0.3141