As part of a promotion, people who participate in a survey are sent a free coupon for one of three winter activities: skiing, snow tubing, or sleigh 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?
a 450
b 300
c 600
d 2/3
Since participants have an equal chance of receiving each type of coupon, we can assume that 1/3 of the participants will receive a coupon for sleigh rides. Therefore, we can find the expected number of participants who will receive a coupon for sleigh rides by multiplying the total number of participants by 1/3:
900 * 1/3 = 300
So the answer is b) 300.
To find out the number of people who would be expected to receive a coupon for sleigh rides, we need to determine the probability of receiving a sleigh ride coupon and multiply it by the total number of participants.
In this case, there are three possible activities, and participants have an equal chance of receiving each type of coupon. Therefore, the probability of receiving a sleigh ride coupon is 1/3.
To calculate the expected number of people receiving a sleigh ride coupon, we multiply the probability by the total number of participants:
Expected number = Probability of receiving sleigh ride coupon * Total number of participants
Expected number = 1/3 * 900
Calculating this, we get:
Expected number = 300
Therefore, the expected number of people who would receive a coupon for sleigh rides is 300.
Answer: b) 300