#63. A study of the checkout lines at the Safeway Supermarket in the South Strand arearevealed that between 4 and 7 P.M. on weekdays there is an average of four customerswaiting in line. What is the probability that you visit Safeway today during this period and find:a. No customers are waiting?b. Four customers are waiting?c. Four or fewer are waiting?d. Four or more are waiting?
