Friday, December 3, 2010

Bonus Question for Ch 6 Test

A person selects a card from a deck. If the card is a red card, he wins nothing. If it is a black card between 2 and 10, he wins $5. If it is a black face card, he wins $50. If he draws a black Ace, he wins $500. Find the expectation of the game if it costs $1 to play.
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5 comments:

  1. UnknownDecember 3, 2010 at 3:05 PM

    Its wrong

    $24.96

    ReplyDelete
  2. ByrdDecember 7, 2010 at 9:26 AM

    you lost me at a person selects a card

    ReplyDelete
  3. ryemorganDecember 7, 2010 at 11:00 AM

    25.48

    ReplyDelete
  4. AutumnDecember 7, 2010 at 11:03 AM

    25.48

    ReplyDelete
  5. Coach FrostDecember 7, 2010 at 2:58 PM

    The exact answer is $25.73. I will accept your answer of $25.48. I understand that your rounded your probabilities to 3 decimal places. Congratulations on getting credit for you work.

    E(x)=(4)(18/52)+(49)(6/52)+(499)(2/52)+(-1)(26/52)=$25.73

    ReplyDelete

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