Quiz 4 Working Papers

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School

Missouri State University, Springfield *

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Course

QBA-237

Subject

Industrial Engineering

Date

Dec 6, 2023

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doc

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7

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Uploaded by DrMusic11842

Quiz 4 Question 1 1. In a random sample of UTC students, 50% indicated they are business majors, 40% engineering majors, and 10% other majors. Of the business majors, 60% were females, whereas 30% of engineering majors were females. Finally, 20% of the other majors were female. What percentage of students in this sample was female? (format must use % sign) 44% 0.33 points Question 2 1. In the two upcoming basketball games, the probability that UTC will defeat Marshall is 0.63, and the probability that UTC will defeat Furman is 0.55. The probability that UTC will defeat both opponents is 0.3465. What is the probability that UTC will defeat Furman given that they defeat Marshall? (2 Decimal format = 0.00) 0.63 0.33 points Question 3 1. In a random sample of UTC students, 50% indicated they are business majors, 40% engineering majors, and 10% other majors. Of the business majors, 60% were females, whereas 30% of engineering majors were females. Finally, 20% of the other majors were female. Given that a person is female, what is the probability that she is an engineering major? (4 Decimal format = 0.0000) .2727 0.33 points Question 4 1. In the two upcoming basketball games, the probability that UTC will defeat Marshall is 0.63, and the probability that UTC will defeat Furman is 0.55. The probability that UTC will defeat both opponents is 0.3465. What is the probability that UTC will win at least one of the games? (4 Decimal format = 0.0000) .8335 0.38 points Page 1 of 5
Quiz 4 Question 5 1. If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P(A or B) = 1. .2 + .6 – p(A*B) 2. .2+.6-.12 3. .68 0.6 2 0.1 2 0.6 0 0. 6 8 0.33 points Question 6 1. What is the probability of selecting an individual who is majoring in Management, given that the person is female? (2 decimal format = 0.00) .25 0.33 points Question 7 1. What is the probability of selecting a male individual? (2 Decimal format = 0.00) Page 2 of 5
Quiz 4 .40 0.33 points Page 3 of 5
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Quiz 4 Question 8 1. Given that a person is male, what is the probability that he is majoring in Management? (2 Decimal format = 0.00) 0.50 0.33 points Question 9 1. A survey of a sample of business students resulted in the following information regarding the genders of the individuals and their selected major. What is the probability of selecting an individual who is majoring in Marketing? (2 Decimal format = 0.00) 0.15 0.33 points Page 4 of 5
Quiz 4 Question 10 1. Each customer entering a department store will either buy or not buy some merchandise. An experiment consists of following 3 customers and determining whether or not they purchase any merchandise. The number of sample points in this experiment is 1. 2x2x2 (either yes or no, either yes or no, either yes or no) 2 4 6 8 0.33 points Question 11 1. The probability of the union of two events with nonzero probabilities cannot be less than one cannot be one cannot be less than one and cannot be one None of the other answers is correct 0.33 points Question 12 1. If P(A) = 0.38, P(B) = 0.83, and P(A and B) = 0.57; then P(A or B) = 1.2 1 0. 6 4 0.7 8 1.7 8 0.33 points Page 5 of 5
Quiz 4 Question 13 1. If A and B are independent events with P(A) = 0.38 and P(B) = 0.55, then P(A| B) = 0.209 0.000 0.550 None of the other answers is correct. (.38) 0.33 points Question 14 1. The probability of the occurrence of event A in an experiment is 1/3. If the experiment is performed 2 times and event A did not occur, then on the third trial event A must occur may occur could not occur has a 2/3 probability of occurring 0.33 points Question 15 1. Initial estimates of the probabilities of events are known as sets posterior probabilities conditional probabilities prior probabilities 0.33 points Save and Submit Click Save and Submit to save and submit. Click Save All Answers to save all answers. Page 6 of 5
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Quiz 4 S ave and Submit Page 7 of 5