1-20chapter stats

A 15 b 122 c 075 d 087 aacsb analytical studies blooms

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Unformatted text preview: turing (79,000 < 90,000) = .2(-30,000) + .5(50,000) + .3(200,000) = 79,000 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Discrete Probability Distribution 104. According to data from the state blood program, 40% of all individuals have group A blood. If six (6) individuals give blood, find the probability None of the individuals has group A blood? A. .0041 B. .0410 C. .4000 D. .0467 AACSB: Analytical Studies Bloom's: Application Difficulty: Easy Topic: Binomial 1-424 Chapter 01 - An Introduction to Business Statistics 105. According to data from the state blood program, 40% of all individuals have group A blood. If six (6) individuals give blood, find the probability Exactly three of the individuals has group A blood? A. .4000 B. .2765 C. .5875 D. .0041 AACSB: Analytical Studies Bloom's: Application Difficulty: Easy Topic: Binomial 106. According to data from the state blood program, 40% of all individuals have group A blood. If six (6) individuals give blood, find the probability At least 3 of the individuals have group A blood. A. .8208 B. .5443 C. .4557 D. .1792 P(x ≥ 3) = P(x = 3) + p(x = 4) + p(x = 5) + p(x = 6) = .4557 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Binomial 1-425 Chapter 01 - An Introduction to Business Statistics 107. According to data from the state blood program, 40% of all individuals have group A blood. If six (6) individuals give blood, find the probability Find the mean number of individuals having group A blood. A. 1.2 B. 1.55 C. 1.44 D. 2.4 AACSB: Analytical Studies Bloom's: Application Difficulty: Easy Topic: Binomial 108. According to data from the state blood program, 40% of all individuals have group A blood. If six (6) individuals give blood, find the probability Suppose that of the six randomly selected individuals, 3 have group A blood. Would you believe the data from the state blood program? A. Yes, probability is > .05 B. Yes, probability is < .05 C. No AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Binomial 1-426 Chapter 01 - An Introduction to Business Statistics 109. A lawyer believes that the probability is .3 that she can win a discrimination suit. If she wins the case she will make $40,000, but if she loses she gets nothing. Assume that she has to spend $5000 preparing the case. What is her expected gain? A. $35,000 B. $7,000 C. $10,500 D. $9,000 = (.7) (-5000) + (.3) (35000) = 7000 AACSB: Analytical Studies Bloom's: Application Difficulty: Hard Topic: Discrete Probability Distribution 110. Your company's internal auditor believes that 10% of the company's invoices contain errors. To check this theory, 20 invoices are randomly selected and 5 are found to have errors. What is the probability that of the 20 invoices written, five or more would contain errors if the theory is valid? A. .0433 B. .0319 C. .9567 D. .8660 P(x ≥ 5) = (.0319) + (.0089) + (.0020) + (.0004) + (0001) = .0433 AACSB: Analytical Studies Bloom's: Application Difficulty: Easy Topic: Binomial 1-427 Chapter 01 - An Introduction to Business Statistics 111. Your company's internal auditor believes that 10% of the company's invoices contain errors. To check this theory, 20 invoices are randomly selected and 5 are found to have errors. Would you accept or reject the claim? A. Accept the auditor's claim B. Reject the auditor's claim Reject claim because P < .05 AACSB: Analytical Studies Bloom's: Analysis Difficulty: Medium Topic: Binomial 112. An important part of the customer service responsibilities of a cable company relates to the speed with which trouble in service can be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a residential service can be repaired on the same day. For the first five troubles reported on a given day, what is the probability that: All five will be repaired on the same day? A. .0010 B. .6328 C. .9990 D. .2373 P(x = 5) = .2373 AACSB: Analytical Studies Bloom's: Application Difficulty: Easy Topic: Binomial 1-428 Chapter 01 - An Introduction to Business Statistics 113. An important part of the customer service responsibilities of a cable company relates to the speed with which trouble in service can be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a residential service can be repaired on the same day. For the first five troubles reported on a given day, what is the probability that: Fewer than two troubles will be repaired on the same day? A. .6328 B. .0010 C. .0156 D. .0146 P(x < 2) = P(x = 0) + P(x = 1) = .0156 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Binomial 114. An important part of the customer service responsibilities of a cable company relates to the speed with which trouble in service can be repaired. Historically, the data show that the likelihood is 0.75 that troubles in a residential service can be repaired on the same day. For the first five troubles reported on a given day, what is the probability that: At least 3 troubles will be repaired...
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