Presentation is loading. Please wait.

Presentation is loading. Please wait.

At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you.

Similar presentations


Presentation on theme: "At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you."— Presentation transcript:

1 At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you win $8. -If the die lands on 6, you win $14.

2 $5 How much money did you win/get back? - I did not get any of the money back How much did you pay? Did you walk away with more or less $? - I walk away losing $5

3 $5 How much money did you win/get back? - I got back $8 How much did you pay? Did you walk away with more or less $? - I walk away with $3 more than I started

4 $5 How much money did you win/get back? - I got back $13 How much did you pay? Did you walk away with more or less $? - I walk away with $8 more than I started

5 The overall amount you walk away with (positive or negative) is called the: I walk away with $8 more than I started?

6 There is a game at the fair where you pay $10 to flip a Coin once -If the coin lands heads up, you lose. -If the coin lands tails up, you win $19

7 $10 How much money did you win/get back? - I did not get any of the money back How much did you pay? Did you walk away with more or less $? - I walk away losing $10

8 $10 How much money did you win/get back? - I got back $19 How much did you pay? Did you walk away with more or less $? - I walk away with $9 more than I started

9 If you lose, the net gain = -10

10 If you win, the net gain = 9

11 Have you ever wondered…….. When playing a game, your chances May seem good, but do you think That the odds are in your favor?

12 Anything deal with chance such Such as a casino or lottery…. What does a business have to do to In order to be successful?

13 Therefore…. At the end of the day, the business Will have a positive net gain and the players will have an overall Negative net gain

14 Back to our dice example….. At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you win $8. -If the die lands on 6, you win $13.

15 What could be your possible winnings? At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you win $8. -If the die lands on 6, you win $13.

16 Winnings LoseWin $8 Win $13 Net Gain P(X) 3/62/6 1/6 Mean = -5 (3/6) + 3 (2/6) + 8 (1/6) Mean = Mean = -0.2

17 Therefore, each time I play the dice game I am Expected to lose $0.20 on average. Does this seem correct that I expect to lose? Yes, because that means the business is making $

18 There is a game at the fair where you pay $10 to flip a Coin once -If the coin lands heads up, you lose. -If the coin lands tails up, you win $19 Winnings LoseWin $8 Net Gain-10 9 P(X) 1/2 E(X) = -10 (1/2) + 9 (1/2) E(X) = = -0.5

19 Find the expected value if tickets are sold in a raffle at $2 each. The prize is a $1000 shopping spree at a local Mall. Assume that one ticket is purchased. Winnings LoseWin Net Gain P(X) E(X) = -2(1499/1500)+ 998(1/1500) E(X) = = _1__ 1500

20 Find the expected value for example #1 if two tickets Are purchased Winnings LoseWin Net Gain P(X) E(X) = -4(1498/1500)+ 996(2/1500) E(X) = = _2__ 1500

21 A lottery offers one $1000 prize, one $500 prize, and Five $100 prizes. One thousand tickets are sold at $3 each. Find the expected value of one ticket. Winnings LoseWin $1000 Net Gain P(X) 993_ 1000 E(X) = -3(993/1000)+ 997(1/1000) + 497(1/1000) + 97(5/1000) E(X) = = _1__ 1000 Win $ _1__ 1000 Win $ _5__ 1000

22 One thousand tickets were sold at $1 each for four Prizes of $100, $50, $25, and $10. What is the Expected value if a person purchases two tickets? Winnings LoseWin $100 Net Gain-2 98 P(X) 992_ 1000 E(X) = _2__ 1000 Win $50 48 _2__ 1000 Win $25 23 _2__ 1000 Win $10 8 _2__ 1000

23 You pay $5 to draw a card from a standard deck of 52 Cards. If you pick a red card, you win nothing. If you Get a spade, you win $5. If you get a club, you win $10. If you get the ace of clubs, you win an additional $20. Find the expected value of drawing one card. Winnings RedSpade Net Gain-5 0 P(X) E(X) = Club Ace of Clubs 25 1_ 52


Download ppt "At a particular carnival, there is a dice game that costs $5 to play. -If the die lands on an odd number, you lose. -If the die lands on a 2 or 4, you."

Similar presentations


Ads by Google