As part of promotion, people who participate in a survey or set a free coupon for one of three winter activities, skiing, snow, tubing or slight rides, participants have an equal chance of receiving each type of coupon. If 900 people participate how many would be expected to receive a coupon for sleigh rides.
Since participants have an equal chance of receiving a coupon for each activity, the probability of receiving a coupon for sleigh rides is 1/3.
Out of 900 participants, the expected number of people who would receive a coupon for sleigh rides can be calculated as:
Expected number = Total number of participants * Probability of receiving a coupon for sleigh rides
Expected number = 900 * (1/3)
Expected number = 300
Therefore, 300 people would be expected to receive a coupon for sleigh rides out of 900 participants.