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Unformatted text preview: at it makes the variance
an unbiased estimate of the population variance.
TRUE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Hard
Topic: Sampling distribution 1567 Chapter 01  An Introduction to Business Statistics 10. The standard deviation of all possible sample proportions increases as the sample size
increases.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample proportion 11. The central limit theorem states that as sample size increases, the population distribution
more closely approximates a normal distribution.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Central limit theorem 12. If a population is known to be normally distributed, then it follows that the sample
standard deviation must equal σ.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution 13. If the sampled population is exactly normal distribution, then the sampling distribution of
is also expected to be normal regardless of the sample size.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sampling distribution of sample mean 1568 Chapter 01  An Introduction to Business Statistics 14. If a population is known to be normally distributed, then it follows that the sample mean
must equal the population mean.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample mean 15. If p = .8 and n = 50, then we can conclude that the sampling distribution of
approximately a normal distribution.
TRUE is AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Easy
Topic: Sampling distribution of sample proportion 16. If p = .9 and n = 40, then we can conclude that the sampling distribution of
approximately a normal distribution.
FALSE is AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample proportion 17. If the sampled population distribution is skewed, then in most cases the sampling
distribution of the mean can be approximated by the normal distribution if the sample size n is
at least 30.
TRUE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Easy
Topic: Sampling distribution of sample mean 1569 Chapter 01  An Introduction to Business Statistics 18. In order to select a stratified random sample, we divide the population into overlapping
groups of similar elements.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Nonrandom Sampling 19. As the sample size increases, the standard deviation of the sampling distribution
increases.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Easy
Topic: Sampling distribution 20. The standard deviation of the sampling distribution of the sample mean is σ.
FALSE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sampling distribution of sample mean 21. The mean of the sampling distribution of
population.
TRUE is always equal to the mean of the sampled AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample mean 1570 Chapter 01  An Introduction to Business Statistics 22. The sampling distribution of the sample mean is developed by repeatedly taking samples
of size n and computing the sample means and reporting the resulting sample means in the
form of a probability distribution.
TRUE AACSB: Reflective Thinking
Bloom's: Application
Difficulty: Medium
Topic: Sampling distribution of sample mean 23. If the sample size n is infinitely large, then
TRUE is an unbiased estimator of. . AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample mean 24. The sample standard deviation s is an unbiased estimator of the population standard
deviation
.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Sampling distribution of sample mean 25. A common practice in selecting a sample from a large geographic area is multistage
cluster sampling.
TRUE AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Nonrandom Sampling 1571 Chapter 01  An Introduction to Business Statistics 26. A low response rate has no effect on the validity of a survey's findings.
FALSE AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Nonrandom Sampling Multiple Choice Questions 27. A ‘Yes or No' question is _____________.
A. Dichotomous
B. Multiple Choice
C. Openended
D. Systematic AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Surveys 28. _____________ occurs when some population elements are excluded from the process of
selecting the sample.
A. Nonresponse
B. Error of observation
C. Undercoverage
D. Sampling error AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Medium
Topic: Sampling 1572 Chapter 01  An Introduction to Business Statistics 29. _____________ is the difference between a numerical description of the populat...
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