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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 1-577 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 1-578 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 after-surgery 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 after-surgery 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 after-surgery 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 after-surgery 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 1-579 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 after-surgery care in the hospital. A scientific poll based on 400 hospital patients has just been conducted. Sixty-four (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 non-normal 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 1-580 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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