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# What is the probability that at least 70 patients

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Unformatted text preview: es 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 most 3.1 inches? A. 84.13% B. 100 % C. 71.57 % D. 28.43 % E. 15.87 % AACSB: Analytic Bloom's: Application Difficulty: Medium Topic: Sampling distribution of sample mean 1-581 Chapter 01 - An Introduction to Business Statistics 52. The spread of the sampling distribution of is ____________ the spread of the corresponding population distribution sampling distribution. A. Larger than B. Smaller than C. The same as D. Exactly ½ AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample mean 53. For large samples, the sampling distribution of of _____. is approximately normal with a mean A. B. C. D. Z AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Sampling distribution of sample mean 54. _____ says that if the sample size is sufficiently large, then the sample means are approximately normally distributed. A. Cluster sampling B. Sampling error C. Sampling distribution of the mean D. Central Limit Theorem AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Central limit theorem 1-582 Chapter 01 - An Introduction to Business Statistics 55. If a sample size is at least _____, then for any sampled population, we can conclude that the sample means are approximately normal. A. 25 B. 20 C. 30 D. 50 AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Easy Topic: Central limit theorem 56. If we wish to estimate a population parameter by using a sample statistic, we are using _____. A. Cluster sampling B. Point estimation C. Random sampling D. Response bias AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Hard Topic: Sampling distribution 57. The mean of the sampling distribution of the sample proportion is equal to _____ when the sample size is sufficiently large. A. µ B. p C. p * n D. (1-p) AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample proportion 1-583 Chapter 01 - An Introduction to Business Statistics 58. If the sampled population is finite and at least _____ times larger than the sample size, the standard deviation of A. 5 B. 20 C. 30 D. 10 decreases as the sample size increases. AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample proportion 59. The notation for the standard deviation of the sampling distribution of the sample mean is __________. A. B. σx C. D. AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Sampling distribution of sample mean 60. The sampling distribution of the sample mean is a normal distribution for ________ sample sizes regardless of the shape of the corresponding population distribution. A. Random B. Large C. Larger than 50 D. Small AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample mean 1-584 Chapter 01 - An Introduction to Business Statistics 61. A theorem that allows us to use the normal probability distribution to approximate the sampling distribution of sample means and sample proportions whenever the sample size is large is known as the _______________. A. Cluster sampling B. Sampling error C. Sampling distribution of the mean D. Central Limit Theorem AACSB: Reflective Thinking Bloom's: Knowledge Difficulty: Medium Topic: Central limit theorem 62. As the sample size increases the variability of the sampling distribution of the mean ______________. A. Increases B. Stays the same C. Is variable D. Decreases AACSB: Reflective Thinking Bloom's: Analysis Difficulty: Medium Topic: Sampling distribution of sample mean 63. As the sample size ___________, the standard deviation of the population of all sample proportions increases. A. Increases B. Stays the same C. Is variable D. Decreases AACSB: Reflective Thinking Bloom's: Analysis Difficulty: Medium Topic: Sampling distribution of sample mean 1-585 Chapter 01 - An Introduction to Business Statistics 64. The population of all _________________ proportions is described by sampling distribution of A. Population B. Random C. Observed D. Sample . AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample proportion 65. The _______________________ of a sample statistic is the probability distribution of the population of all possible values of the sample statistic. A. Sample mean B. Sampling distribution C. Probability D. Observations AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution 66. The ___________ is a minimum-variance unbiased point estimate of the mean of a normally distributed population. A. Sample mean B. Sample variance C. Sample standard deviation D. Observed mean AACSB: Reflective Thinking Bloom's: Comprehension Difficulty: Medium Topic: Sampling distribution of sample mean 1-586 Chapter 01 - An Introduction to Business Statistics 67. Find A. .9944 B. .4483 C. .5517 D. .1056 AACSB: Analytic Bloom's: Application Difficulty: Medium...
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