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Unformatted text preview: en testing a hypothesis about a single mean, if the sample size is 20, and the
population standard deviation is unknown, the correct test statistic to use is ___________.
A. χ
B. Z
C. t
D. pvalue AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Hypothesis testing 41. When testing a hypothesis about a single mean, sample size of 200 is selected from a
normally distributed population. If the population standard deviation is known, the correct test
statistic to use is ___________.
A. χ
B. Z
C. t
D. pvalue AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Hard
Topic: Hypothesis testing 1768 Chapter 01  An Introduction to Business Statistics 42. __________is the probability of not rejecting H0when H0 is false.
A. Type I error
B. Type II error
C. Random error
D. α AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Type I or Type II error 43. For a fixed sample size, the lower we set α, the higher is the ___________.
A. Type I error
B. Type II error
C. Random error
D. pvalue AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Type I or Type II error 44. Assuming a fixed sample size, as α (Type I error) decreases, β (Type II error)
___________.
A. Increases
B. Decreases
C. Stays the same
D. Randomly fluctuates AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Type I or Type II error 1769 Chapter 01  An Introduction to Business Statistics 45. As the type II error β of statistical test increases, the power of the test _____________.
A. Increases
B. Decreases
C. Stays the same
D. Randomly fluctuates AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Type I or Type II error 46. A null hypothesis is not rejected at given level of significance. As the assumed value of
the mean gets further away from the true population mean, the type II error will
_____________.
A. Increase
B. Decrease
C. Stay the same
D. Randomly fluctuate AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Type I or Type II error 47. The _____ hypothesis is not rejected unless there is sufficient sample evidence to do so.
A. Research
B. Alternative
C. Null
D. Chisquare AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Hypothesis testing 1770 Chapter 01  An Introduction to Business Statistics 48. The _____ hypothesis will be accepted only if there is convincing sample evidence that it
is true.
A. Ztest
B. Alternative
C. Null
D. Chisquare AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Hypothesis testing 49. Assuming that the null hypothesis is true, the ______________ is the probability of
observing a value of the test statistic that is at least as extreme as the value actually computed
from the sample data.
A. α
B. β
C. pvalue
D. Type I error AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Hypothesis testing 50. The value of the test statistic is compared with a(n) _______________ in order to decide
whether the null hypothesis can be rejected.
A. α
B. β
C. pvalue
D. critical value AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Medium
Topic: Hypothesis testing 1771 Chapter 01  An Introduction to Business Statistics 51. A(n) _________ hypothesis is the statement that is being tested. It usually represents the
status quo and it is not rejected unless if there is convincing sample evidence that it is false.
A. Research
B. Alternative
C. Null
D. Chisquare AACSB: Reflective Thinking
Bloom's: Comprehension
Difficulty: Easy
Topic: Hypothesis testing 52. Determine the pvalue for H0: p ≤ .5 versus HA: p > .5 when n = 225 and
A. .1131
B. .2262
C. .0082
D. .8869 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Hypothesis testing 1772 = .54. Chapter 01  An Introduction to Business Statistics 53. Determine the pvalue for H0: p = .5 versus HA: p ≠ .5 when n = 225 and
A. .1131
B. .2262
C. .0164
D. .0082 = .54. AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Hypothesis testing 54. Determine the pvalue for H0: µ ≥ 95 versus HA: µ < 95 when
= 37.
A. .9984
B. .0032
C. .0016
D. less than .0001 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Hypothesis testing 1773 = 90.2, s = 9.92, and n Chapter 01  An Introduction to Business Statistics 55. Determine the pvalue for H0: µ = 95 versus HA: µ ≠ 95 when
= 37.
A. .0032
B. .0016
C. .9968
D. less than .0001 = 90.2, s = 9.92, and n AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Topic: Hypothesis testing 56. In testing H0: µ = 23 versus HA: µ > 23 when
value of the tstatistic?
A. 10.00
B. 2.24
C. 2.24
D. 1.34 AACSB: Analytic
Bloom's: Application
Difficulty: Easy
Topic: Hypothesis testing 1774 =26, s = 6, and n = 20, what is the Chapter 01  An Introduction to Business Statistics 57. In testing H0: µ ≤ 23 versus HA: µ > 23 when
value of the zstatistic?
A. 2.74
B. 15.00
C. 1.09
D. 2.74 = 26, s = 6, and n = 30, what is the AACSB: Analytic
Bloom's: Application
Diffi...
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 Winter '14

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