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February 28, 2015

February 28, 2015

Posted by **Jen** on Saturday, July 30, 2011 at 3:01pm.

??

- Math -
**MathMate**, Saturday, July 30, 2011 at 3:05pmThink of what you'll get if you bought all the tickets, and go from there.

- Math -
**Jen**, Saturday, July 30, 2011 at 3:11pm1,000-600=400 ??

- Math -
**MathMate**, Saturday, July 30, 2011 at 3:40pmIf you bought all 1000 tickets, it would have cost you $1000.

However, you would get the grand prize of $400 and 2 consolation prizes of $100 each for a total of $600.

So you get back $600 for the $1000 that you spent, or, on the average, $0.60 for each ticket you buy.

- Math -
**Jen**, Saturday, July 30, 2011 at 3:45pmso his expected value is $600?

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**Ms. Sue**, Saturday, July 30, 2011 at 3:52pmWhat is Jeremy's expected value?

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**Jen**, Saturday, July 30, 2011 at 3:59pm$600? or $400??

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**Damon**, Saturday, July 30, 2011 at 6:04pmBut Jen, in the end he only bought one ticket, not 1000. 600/1000

MathMate already told you the answer.

- Math -
**Damon**, Saturday, July 30, 2011 at 6:16pmPerhaps it is easier from the point of view of the seller.

Sold 1000 tickets for 1000 dollars.

Gave out 600.

So .6 of the income is paid out. So if you put in $1, you can expect .6 * $1 = $0.60

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