8,9 I need help on how to solve them

Let X be the amount of time (in hours the wait is t . 0 t is represented by ) ge a table at a restaurant. Suppose the cdf 0 x 2 Use the cdf to determine ox. a) 0.1500 k b) 0.948? c) 0.9000 d) 0.3873 9) 1.38773 f) None of the above You did not answer the qVUestioun. Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 6 minutes. Determine the probability that the child must wait at least 7 minutes on the bus on a given morning. a) 0.6114 b) 0.3114 c) 0.6228 CCRSUOSVMMS