There are two different raffles you can enter.Raffle A has 200 tickets. Each ticket costs $17. One ticket will win a $190 prize, and the remaining tickets will win nothing.Raffle B, which is for a fundraiser, has 250 tickets. Each ticket costs $1. One ticket will win a $190 prize, and the remaining tickets will win nothing.Which raffle is a better deal?Choices:(A)Raffle A(B)Raffle B
Q. There are two different raffles you can enter.Raffle A has 200 tickets. Each ticket costs $17. One ticket will win a $190 prize, and the remaining tickets will win nothing.Raffle B, which is for a fundraiser, has 250 tickets. Each ticket costs $1. One ticket will win a $190 prize, and the remaining tickets will win nothing.Which raffle is a better deal?Choices:(A)Raffle A(B)Raffle B
Calculate Expected Value: Calculate the expected value for Raffle A.Expected value (EVA) = (Probability of winning × Prize amount) + (Probability of not winning ×0)EVA = (2001×$190) + (200199×$0)EVA = $0.95 + $0EVA = $0.95
Subtract Cost for Profit: Subtract the cost of one ticket from the expected value to find the expected profit for Raffle A.Expected profit (EPA) = Expected value - Cost per ticketEPA=$0.95−$17EPA=−$16.05
Calculate Expected Value: Calculate the expected value for Raffle B.Expected value (EVB) = (Probability of winning × Prize amount) + (Probability of not winning ×0)EVB = (2501×$190) + (250249×$0)EVB = $0.76 + $0EVB = $0.76
Subtract Cost for Profit: Subtract the cost of one ticket from the expected value to find the expected profit for Raffle B.Expected profit EPB = Expected value - Cost per ticketEPB=$0.76−$1EPB=−$0.24
Compare Expected Profits: Compare the expected profits of Raffle A and Raffle B to determine which is the better deal.Since −$16.05 (Raffle A) is less than −$0.24 (Raffle B), Raffle B is the better deal.