Questions from College Mathematics


Q: A single die is rolled once. You lose $12 if

A single die is rolled once. You lose $12 if a number divisible by 3 turns up. How much should you win if a number not divisible by 3 turns up in order for the game to be fair? Describe the process an...

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Q: A coin is tossed three times. Suppose you lose $3

A coin is tossed three times. Suppose you lose $3 if 3 heads appear, lose $2 if 2 heads appear, and win $3 if 0 heads appear. How much should you win or lose if 1 head appears in order for the game to...

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Q: A card is drawn from a standard 52-card deck.

A card is drawn from a standard 52-card deck. If the card is a diamond, you win $10; otherwise, you lose $4. What is the expected value of the game?

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Q: A 5-card hand is dealt from a standard 52-

A 5-card hand is dealt from a standard 52-card deck. If the hand contains at least one diamond, you win $10; otherwise, you lose $4. What is the expected value of the game?

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Q: A single card is drawn from a standard 52-card deck

A single card is drawn from a standard 52-card deck. Let D be the event that the card drawn is a diamond, and let F be the event that the card drawn is a face card. find the indicated probabilities....

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Q: The payoff table for three possible courses of action is given below

The payoff table for three possible courses of action is given below. Which of the three actions will produce the largest expected value? What is it?

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Q: In roulette (see Problem 35), the numbers from 1 to

In roulette (see Problem 35), the numbers from 1 to 36 are evenly divided between red and black. A player who bets $1 on black wins $1 (and gets the $1 bet back) if the ball comes to rest on black; ot...

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Q: A game has an expected value to you of - $0

A game has an expected value to you of - $0.50. It costs $2 to play, but if you win, you receive $20 (including your $2 bet) for a net gain of $18. What is the probability of winning? Would you play t...

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Q: Ten thousand raffle tickets are sold at $2 each for a

Ten thousand raffle tickets are sold at $2 each for a local library benefit. Prizes are awarded as follows: 2 prizes of $1,000, 4 prizes of $500, and 10 prizes of $100. What is the expected value of t...

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Q: A box of 8 flashbulbs contains 3 defective bulbs. A random

A box of 8 flashbulbs contains 3 defective bulbs. A random sample of 2 is selected and tested. Let X be the random variable associated with the number of defective bulbs in a sample. (A) Find the pro...

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