Michael finds that 35 customers at his grandfather's grocery store use a coupon. to simulate the behavior of the next 5 customers, he writes the numbers 1, 2, 3, 4, and 5 on cards and mixes them up. he writes down that 1, 2, and 3 represent someone using a coupon and 4 and 5 represent someone not using a coupon. michael then randomly selects a card, puts it back, and records the number. he repeats this 5 times to represent 5 customers or 1 trial.