Question: WAITING LINES The accompanying data were obtained in a study conducted by the manager of SavMore Supermarket. In this study, the number of customers waiting in line at the express checkout at the beginning of each 3-min interval between 9 a.m. and 12 noon on Saturday was observed.
a. Find the probability distribution of the random variable X, where X denotes the number of customers observed waiting in line.
b. Draw the histogram representing the probability distribution.