devry 221 4.docx

# 130 125 160 question 13 2 2 pts randomly select a

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13.0% 12.5% 16.0% Question 13 2 / 2 pts Randomly select a customer that is a frequent shopper at our store. Randomly select a customer who does not know the store's location. Are these events mutually exclusive? Correct! Mutually exclusive events Non-mutually exclusive events

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Question 14 2 / 2 pts In a sample of 800 adults, 228 said that they liked sugar cereals. Three adults are selected at random without replacement. Find the probability that all three like sugar cereals. 9.50% 2.31% 3.17% Correct! 2.29% Question 15 2 / 2 pts In a sample of 80 adults, 28 said that they would buy a car from a friend. Three adults are selected at random without replacement. Find the probability that none of the three would buy a car from a friend. 34.30% 21.67% 28.80%
Correct! 26.90% Question 16 2 / 2 pts A sock drawer has 17 folded pairs of socks, with 7 pairs of white, 6 pairs of black and 4 pairs of blue. What is the probability, without looking in the drawer, that you will first select and remove a black pair, then select either a blue or a white pair? 35.25% 22.84% Correct! 24.26% 64.71% Question 17 2 / 2 pts An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes money, then there is a 50% chance that among those making money, they would also get a dividend. Find the probability that the investor makes money and receive a dividend. 60% Correct!

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30% 10% 50% Question 18 2 / 2 pts An investment advisor believes that there is a 60% chance of making money by investing in a specific stock. If the stock makes money, then there is a 50% chance that
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• Spring '10
• BethDodson
• Probability, Randomness, Probability interpretations, Frequency probability

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