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Unformatted text preview: f of a local manufacturing company performs a sample audit
each quarter to estimate the proportion of accounts that are delinquent more than 90 days
overdue. The historical records of the company show that over the past 8 years 13 percent of
the accounts are delinquent. For this quarter, the auditing staff randomly selected 250
customer accounts. What is the probability that no more than 40 accounts will be classified as
delinquent?
A. 42.07 %
B. 92.07 %
C. 7.93 %
D. 40.15 %
E. 90.15% AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Topic: Sampling distribution of sample proportion 1577 Chapter 01  An Introduction to Business Statistics 43. The internal auditing staff of a local manufacturing company performs a sample audit
each quarter to estimate the proportion of accounts that are delinquent more than 90 days
overdue. The historical records of the company show that over the past 8 years 14 percent of
the accounts are delinquent. For this quarter, the auditing staff randomly selected 250
customer accounts. What is the probability that at least 30 accounts will be classified as
delinquent?
A. 31.86 %
B. 18.14 %
C. 81.86 %
D. 63.72 %
E. 75.84 % AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Topic: Sampling distribution of sample proportion 44. The internal auditing staff of a local manufacturing company performs a sample audit
each quarter to estimate the proportion of accounts that are delinquent more than 90 days
overdue. The historical records of the company show that over the past 8 years 14 percent of
the accounts are delinquent. For this quarter, the auditing staff randomly selected 250
customer accounts. What are the mean and the standard deviation of the sampling distribution
of
?
A. 14 and 250
B. .14 and .1204
C. 35 and 5.486
D. .14 and .0219
E. 35 and 30.1 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Sampling distribution of sample proportion 1578 Chapter 01  An Introduction to Business Statistics 45. According to a hospital administrator, historical records over the past 10 years have
shown that 20% of the major surgery patients are dissatisfied with aftersurgery care in the
hospital. A scientific poll based on 400 hospital patients has just been conducted.
What is the probability that less than 64 patients will not be satisfied with the aftersurgery
care?
A. 47.72%
B. 2.28%
C. 97.72%
D. 95.44%
E. 4.56% AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Topic: Sampling distribution of sample proportion 46. According to a hospital administrator, historical records over the past 10 years have
shown that 20% of the major surgery patients are dissatisfied with aftersurgery care in the
hospital. A scientific poll based on 400 hospital patients has just been conducted.
What is the probability that at least 70 patients will not be satisfied with the aftersurgery
care?
A. 89.44%
B. 39.44%
C. 10.56%
D. 78.88%
E. 84.49% AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Topic: Sampling distribution of sample proportion 1579 Chapter 01  An Introduction to Business Statistics 47. According to a hospital administrator, historical records over the past 10 years have
shown that 20% of the major surgery patients are dissatisfied with aftersurgery care in the
hospital. A scientific poll based on 400 hospital patients has just been conducted.
Sixtyfour (64) patients indicated that they were dissatisfied with the after surgery care. What
are the mean and the standard deviation of the sampling distribution of ?
A. 16% and .034%
B. 20% and 1.83%
C. 20% and 2%
D. 20% and .034%
E. 20% and 16% AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Topic: Sampling distribution of sample proportion 48. For nonnormal populations, as the sample size (n) ___________________, the
distribution of sample means approaches a(n) ________________ distribution.
A. Decreases, Uniform
B. Increases, Normal
C. Decreases, Normal
D. Increases, Uniform
E. Increases, Exponential AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Hard
Topic: Sampling distribution of sample mean 1580 Chapter 01  An Introduction to Business Statistics 49. In a manufacturing process a machine produces bolts that have an average length of 3
inches with a variance of .03. If we randomly select three bolts from this process: What is the
standard deviation of the sampling distribution of the sample mean?
A. .03
B. .01
C. .1732
D. .0577
E. .10 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Sampling distribution of sample mean 50. In a manufacturing process a machine produces bolts that have an average length of 3
inches with a variance of .03. If we randomly select three bolts from this process: What is the
probability the mean length of the bolt is at least 3.16 inches?
A. 97.72 %
B. 5.48 %
C. 94.52 %
D. 44.52 %
E. 2.28 % AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Sampling distribution of sample mean 51. In a manufacturing process a machine produces bolts that have an average length of 3
inch...
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This document was uploaded on 01/20/2014.
 Winter '14

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