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Unformatted text preview: event is a(n) _____ probability distribution. A. Binomial B. Uniform C. Exponential D. Normal AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Exponential Distribution 1-487 Chapter 01 - An Introduction to Business Statistics 49. A continuous probability distribution having a rectangular shape where the probability is evenly distributed over an interval of numbers is a(n) _____ distribution. A. Exponential B. Binomial C. Normal D. Uniform AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Easy Topic: Uniform Distribution 50. The specific shape of each normal distribution is determined by its _____ and _____. A. Mean, Standard Deviation B. Median, Standard Deviation C. Mean, Variance D. Median, Variance AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Normal Distribution 51. The number of standard deviations that a value x is from the mean is a(n) _____. A. Variance B. Exponential value C. Z-score D. Area AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Normal Distribution 1-488 Chapter 01 - An Introduction to Business Statistics 52. The area under the curve of a valid continuous probability distribution must _____. A. Equal 1 B. Be between 0 and 1 C. Be infinite D. Be less than 1 AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Continuous Probability Distribution 53. Given that X is a normal random variable, the probability that a given value of X is below its mean is ________________. A. 1 B. equal to 0.5 C. less than 0.5 D. greater than 0.5 AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Easy Topic: Normal Distribution 54. A normal distribution with mean zero and a standard deviation one is called the _____ normal distribution. A. Continuous B. Uniform C. Exponential D. Standard AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Topic: Normal Distribution 1-489 Chapter 01 - An Introduction to Business Statistics 55. The thickness of randomly selected metal piece is a ___________ random variable. A. Poisson B. Continuous C. Discrete D. Binomial AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Continuous Random Variable 56. __________ values of the standard deviation results in a normal curve that is wider and flatter. A. Smaller B. Equal C. Larger D. Uniform AACSB: Reflective Thinking Bloom's: Synthesis Difficulty: Medium Topic: Normal Distribution 57. _____________ values of the standard deviation results in a normal curve that is narrower and more peaked. A. Smaller B. Equal C. Larger D. Uniform AACSB: Reflective Thinking Bloom's: Synthesis Difficulty: Medium Topic: Normal Distribution 1-490 Chapter 01 - An Introduction to Business Statistics 58. The mean of a standard normal distribution is always equal to _______. A. 1 B. 0.5 C. 0 D. -1 AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Topic: Normal Distribution 59. The standard deviation of a standard normal distribution is always equal to _____. A. 1 B. 0.5 C. 0 D. -1 AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Normal Distribution 60. For a normal population with a mean of 10 and a variance 4, the P(X ≥ 10) is ___. A. 1.0 B. 0.5 C. 0.75 D. 0.25 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Normal Distribution 1-491 Chapter 01 - An Introduction to Business Statistics 61. If the random variable of x is normally distributed, ____ % of all possible observed values of x will be within two standard deviations of the mean. A. 99.73 B. 68.26 C. 95.00 D. 95.44 AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Topic: Normal Distribution 62. The time of travel from a person's apartment to the bus station follows a uniform distribution over the interval from 20 to 30 minutes. If he/she leaves home at 9:05 AM, what is the probability that he/she will get to the station between 9:25 and 9:30 AM? A. 1.0 B. 0 C. 0.5 D. 0.25 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Uniform Distribution 1-492 Chapter 01 - An Introduction to Business Statistics 63. Given the length an athlete throws a hammer is a normal random variable with mean 50 feet and standard deviation 5 feet, what is the probability he throws it: No less than 55 feet? A. .8413 B. .1587 C. .6826 D. .3174 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Normal Distribution 64. Given the length an athlete throws a hammer is a normal random variable with mean 50 feet and standard deviation 5 feet, what is the probability he throws it: Between 50 feet and 60 feet? A. .9972 B. .5000 C. .9544 D. .4772 AACSB: Analytical Studies Bloom's: Application Difficulty: Medium Topic: Normal Distribution 1-493 Chapter 01 - An Introduction to Business Statistics 65. If the scores on an aptitude test are normally distributed with mean 500 and standard deviation 100, what proportion of the test scores are less than 585? A. .1977 B. .8500 C. .1500 D. .8023 AACSB: Analytical Studies Bloom's: Ap...
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