We decide that we can certainly increase our chances of winning if we bet on a color instead of a number. Roulette allows us to bet on either red or black and if the number is that color, we win. This bet pays even money in most casinos. This means that for each dollar we bet, we will win $1 for choosing the winning color. So, if we bet $5 and win, we would keep our $5 and win $5 more. If we lose, we lose whatever amount of money we bet, just as before.
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What is the probability that we will win on a single spin if we bet on red?
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What is the probability that we will lose on a single spin if we bet on red?
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If we bet $60 on the winning color, how much money will we win? Is this more or less than we will win by betting $8 on our favorite number? Explain why.
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- You are using cash to pay a $20 parking ticket. In your wallet you have one $5-dollar bill, two $10-dollar bills, and three $20 dollar bills, and you draw out one bill at a time at random until you have at least $20. If you keep track of each bill as you draw it out of the wallet, how many different ways are there for you to get at least $20?arrow_forwardIn another game at Bonehead Casino in Reno, the player draws one card from a standard deck. If it is a KK , then the player wins $100; an AA, QQ , then the player wins $35; an 88, 77, JJ, then the player wins $15; anything else, then the player loses. It costs $16 to play (for each play). Now, Melvin plays the game 1000 times, Rufus plays the game 50,000 times. Find the probability that (a) Melvin makes $100 or more. (b) Rufus makes $35,000 or more.arrow_forwardIn a history class, Colin and Diana both take a multiple choice quiz. There are 10 questions. Each question has five possible answers. What is the probability that: a) Colin will pass the test if he guesses an answer to each question? b) Diana will pass the test if she studies so that she has a 75% chance of answering each question correctly?arrow_forward
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- At a county fair, you pay $2 to play the following game: You are given a fair coin, and two bags standin front of you, labelled Bag A and Bag B. You flip a coin: If your coin lands Heads, you pick a ballfrom Bag A. If your coin lands tails, you pick a ball from Bag B. Each ball has a dollar value written onit, and you win the number of dollars shown on the ball. • Bag A contains four (4) balls in total: Three (3) balls show $1, and one (1) ball shows $5.• Bag B contains three (3) balls in total: Two (2) balls show $2, and one (1) ball shows $3.You WIN money if you leave with more money than you started with. You LOSE money if you leavewith less money than you started with. You BREAK EVEN if you leave with the same money that youstarted with.Let H denote the event that you flip heads, T denote the event that you flip tails, W the event that youwin, and L the event that you lose.(i) You pay to play exactly one game. What is the probability that you WIN given thatyou flipped a Heads?(ii)…arrow_forwardZara and Sue play the following game. Each of them roll a fair six-sided die once. If Sue’s number is greater than or equal to Zara’s number, she wins the game. But if Sue rolled a number smaller than Zara’s number, then Zara rolls the die again. If Zara’s second roll gives a number that is less than or equal to Sue’s number, the game ends with a draw. If Zara’s second roll gives a number larger than Sue’s number, Zara wins the game. Find the probability that Zara wins the game and the probability that Sue wins the game. Note: Sue only rolls a die once. The second roll, if the game goes up to that point, is made only by Zara.arrow_forwardAt a back-to-school party, one of your friends lets you play a two-stage game where you pay $3 to play. The game works as follows: flip a fair coin, noting the side showing, and roll a fair standard 4-sided die (numbered 1–4), noting the number showing. If the die shows a 3 and the coin shows tails, then you win $22. If the coin shows heads and the die shows an even number, then you win $9. Otherwise, you do not win anything. Let X be your net winnings. (a) Create a probability distribution for X. Enter the possible values of X in ascending order from left to right. All probabilities should be exact. X P(X) (b) Compute your expected net winnings for the game. Round your answer to the nearest cent.arrow_forward
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