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Unformatted text preview: stribution r is 300, N = 600 and n = 150, estimate the binomial
probability of success.
A. 0.500
B. 0.333
C. 0.083
D. 0.250 1380 Chapter 01  An Introduction to Business Statistics Chapter 05 Discrete Random Variables Answer Key True / False Questions 1. The binomial experiment consists of n independent, identical trials, each of which results in
either success or failure and is such that the probability of success on any trial is the same.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Binomial 2. A Poisson random variable is a continuous variable that can be used to describe the number
of occurrences of an event over a specified interval of time or space.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Poisson 1381 Chapter 01  An Introduction to Business Statistics 3. A discrete random variable may assume a countable number of outcome values.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Discrete Random Variable 4. The variable "home ownership" can take on one of two values, 1 if the person living in a
home owns the home and zero if the person living in a home does not own the home is an
example of a discrete random variable.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Discrete Random Variable 1382 Chapter 01  An Introduction to Business Statistics 5. If the number of surface nonconformities on a specific size of a metal piece is the discrete
random variable in question, then the appropriate probability distribution that can describe the
probability of a specific size metal sheet containing 3 nonconformities is most likely given by
the binomial distribution.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Binomial 6. The mean of the binomial distribution is np(1p).
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Binomial 7. In a binomial experiment, the results of one trial are dependent on the results of other
trials.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Binomial 8. In a binomial distribution the random variable X is continuous.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Easy
Topic: Binomial 1383 Chapter 01  An Introduction to Business Statistics
Multiple Choice Questions 9. If p = .1 and n = 5, then the corresponding binomial distribution is
A. Right skewed
B. Left skewed
C. Symmetric
D. Bimodal AACSB: Reflective Thinking
Bloom's: Analysis
Difficulty: Medium
Topic: Binomial 10. If p = .5 and n = 4, then the corresponding binomial distribution is
A. Right skewed
B. Left skewed
C. Symmetric
D. Bimodal AACSB: Reflective Thinking
Bloom's: Analysis
Difficulty: Medium
Topic: Binomial 11. The requirement that the probability of success remains constant from trial to trial is a
property of the _________________ distribution.
A. Binomial
B. Uniform
C. Normal
D. Poisson AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Binomial 1384 Chapter 01  An Introduction to Business Statistics 12. If the number of surface nonconformities on a specific size of metal piece is the discrete
random variable in question, then the appropriate probability distribution that can describe the
probability of a specific size metal sheet containing 3 defectives is given most likely by
___________________ distribution.
A. Binomial
B. Poisson
C. Hypergeometric
D. Both A and B AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Poisson 13. Which of the following distributions can be used to solve the following problem?
The average number of cars arriving at a drivethru fast food restaurant is 3 in ten minutes,
what is the probability that exactly 4 cars will arrive in a five minute interval?
A. Binomial
B. Poisson
C. Both of the above
D. None of the above AACSB: Reflective Thinking
Bloom's: Analysis
Difficulty: Medium
Topic: Poisson 14. The mean of the binomial distribution is equal to:
A. p
B. np
C. px (1p)nx
D. (n) (p) (1p)
E. AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Binomial 1385 Chapter 01  An Introduction to Business Statistics 15. The number of ways to arrange x successes among n trials is equal to
A.
B.
C.
D. AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Binomial 16. Which of the following is a valid probability value for a discrete random variable?
A. .2
B. 1.01
C. .7
D. All of the above AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Discrete Probability Distribution 17. A total of 50 raffle tickets are sold for a contest to win a car. If you purchase one ticket,
what are your odds against winning?
A. 49 to 1
B. 50 to 1
C. .05
D. .01 AACSB: Analytical Studies
Bloom's: Application
Difficulty: Medium
Topic: Discrete Probability Distribution 1386 Chapter 01  An Introduction to Business Statistics 18. Which one of the following statements is not an assumption of the binomial distribution?
A. Sampli...
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 Winter '14

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