Western UniversityMOS 2310MULTIPLE CHOICE QUESTIONS

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21. The volume of liquid in an unopened 1-litre can of paint is an example of ___. a) the binomial distribution b) the normal distribution c) a continuous random variable d) a discrete random vari... able e) a constant Answer: c 22. The number of defective parts in a lot of 25 parts is an example of ___. a) a discrete random variable b) a continuous random variable c) the Poisson distribution d) the normal distribution e) a constant Answer: a 23. You are offered an investment opportunity. Its outcomes and probabilities are presented in the following table: x x) -$1,000 .40 $0 .20 +$1,000 .40 The mean of this distribution is ___. a) -$400 b) $0 c) $200 d) $400 e) $500 Answer: b 24. You are offered an investment opportunity. Its outcomes and probabilities are presented in the following table: x x) -$1,000 .40 $0 .20 +$1,000 .40 The standard deviation of this distribution is ___. a) -$400 b) $663 c) $800,000 d) $894 e) $2000 Answer: d 25. You are offered an investment opportunity. Its outcomes and probabilities are presented in the following table: x x) -$1,000 .40 $0 .20 +$1,000 .40 Which of the following statements is true? a) This distribution is skewed to the right. b) This is a binomial distribution. c) This distribution is symmetric. d) This distribution is skewed to the left. e) This is a Poisson distribution Answer: c 26. A market research team compiled the following discrete probability distribution. In this distribution x represents the number of automobiles owned by a family. P(x) 0.10 0.10 0.50 0.30 The mean (average) value of x is ___. a) 1.0 b) 1.5 c) 2.0 d) 2.5 e) 3.0 Answer: c 27. A market research team compiled the following discrete probability distribution. In this distribution x represents the number of automobiles owned by a family. The standard deviation of x is ___. a) 0.80 b) 0.89 c) 1.00 d) 2.00 e) 2.25 Answer: b 28. A market research team compiled the following discrete probability distribution. In this distribution x represents the number of automobiles owned by a family. P(x) 0.10 0.10 0.50 0.30 Which of the following statements is true? a) This distribution is skewed to the right. b) This is a binomial distribution. c) This is a normal distribution. d) This distribution is skewed to the left. e) This distribution is bimodal. Answer: d [Show More]

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