There are two different raffles you can enter.Raffle A is for a $130 prize. Out of 200 tickets, each costing $1, one ticket will win the prize, and the other tickets will win nothing.In raffle B, one ticket out of 100 will win a $550 prize. The other tickets will win nothing. Each ticket costs $7.Which raffle is a better deal?Choices:(A)Raffle A(B)Raffle B
Q. There are two different raffles you can enter.Raffle A is for a $130 prize. Out of 200 tickets, each costing $1, one ticket will win the prize, and the other tickets will win nothing.In raffle B, one ticket out of 100 will win a $550 prize. The other tickets will win nothing. Each ticket costs $7.Which raffle is a better deal?Choices:(A)Raffle A(B)Raffle B
Calculate Expected Value: Calculate the expected value for Raffle A.E(A) = (\text{Prize amount} \times \text{Probability of winning}) + (0 \times \text{Probability of losing})E(A)=($(130)×2001)+($(0)×200199)E(A)=$0.65+$0E(A)=$0.65
Find Expected Profit: Subtract the cost of one ticket from the expected value of Raffle A to find the expected profit.Expected profit A = E(A)−Cost per ticketExpected profit A = (0.65)−(1)Expected profit A = −(0.35)
Calculate Expected Value: Calculate the expected value for Raffle B. E(B)=(Prize amount×Probability of winning)+(0×Probability of losing)E(B)=($(550)×1001)+($(0)×10099)E(B)=$(5.50)+$(0)E(B)=$(5.50)
Find Expected Profit: Subtract the cost of one ticket from the expected value of Raffle B to find the expected profit.Expected profit B = E(B)−Cost per ticketExpected profit B = ($5.50)−($7)Expected profit B = −($1.50)
Compare Expected Profits: Compare the expected profits of Raffle A and Raffle B to determine which is the better deal.Since −$0.35 is greater than −$1.50, Raffle A is the better deal.