# Math

posted by .

On a TV game show, the contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a \$40,000 foreign car, a \$3 silly straw, and a \$50 mathematics textbook?
Answer: 1/3 but I don't think that this correct.
Thanks.

• Math -

OF course it is not correct. Expected Value is in dollars.

EV=1/3(40,000) + 1/3 (3) + 1/3 (50)

http://en.wikipedia.org/wiki/Expected_value

• Math -

So then, my answer should be this:
13,333.33333+1+16.66666667= 13,351 is this correct?
Thanks.

• Math -

"Expected Value is in dollars."

• Math -

Thanks.

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single_question_with_answer

the passage contains a mathematical question and an answer to that question. the question asks about the expected value of selecting a door in a game show scenario, and the answer provided is 13,351, which is the correct expected value in dollars.
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# Math

posted by .

On a TV game show, the contestant is asked to select a door and then is rewarded with the prize behind the door selected. If the doors can be selected with equal probability, what is the expected value of the selection if the three doors have behind them a \$40,000 foreign car, a \$3 silly straw, and a \$50 mathematics textbook?
Answer: 1/3 but I don't think that this correct.
Thanks.

• Math -

OF course it is not correct. Expected Value is in dollars.

EV=1/3(40,000) + 1/3 (3) + 1/3 (50)

http://en.wikipedia.org/wiki/Expected_value

• Math -

So then, my answer should be this:
13,333.33333+1+16.66666667= 13,351 is this correct?
Thanks.

• Math -

"Expected Value is in dollars."

• Math -

Thanks.

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user
TYPE: SINGLE_QUESTION_WITH_ANSWER

The passage contains a mathematical question and an answer to that question. The question asks about the expected value of selecting a door in a game show scenario, and the answer provided is 13,351, which is the correct expected value in dollars.