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Unformatted text preview: uming that the sampled
population(s) have a particular type of probability distribution.
A. Wilcox Rank Sum
B. Nonparametric
C. Linear regression
D. Correlation 50. The __________________ test is a nonparametric counterpart of a small sample t test for
comparing two independent population locations.
A. Wilcoxon Rank Sum
B. KruskalWallis
C. Wilcoxon signed rank
D. Sign Test 51. The __________________ test is a nonparametric counterpart of a one way ANOVA F
test.
A. Wilcoxon Rank Sum
B. KruskalWallis
C. Wilcoxon signed rank
D. Sign Test 52. In a Wilcoxon Rank Sum Test, when two or more observations are equal, we assign to
each tied observation a rank equal to the ______ of the consecutive ranks.
A. average
B. median
C. sum
D. difference 53. The Wilcoxon rank sum test is used to compares the locations of two _____________
populations.
A. dependent
B. normal
C. independent
D. similar 11776 Chapter 01  An Introduction to Business Statistics 54. The ______________ test is a nonparametric method that requires data consisting of
matched pairs.
A. Wilcoxon Rank Sum
B. KruskalWallis
C. Wilcoxon signed rank
D. Sign Test 55. If the population from which we sample is highly skewed to the right or to the left, then
the population _________ might be a better measure of central tendency than the population
mean.
A. median
B. variance
C. mode
D. average 56. When a large sample is taken, _______________ approximation to the binomial
distribution can be used to implement the sign test.
A. Chisquare
B. normal
C. correlation coefficient
D. Rank sum 57. In order to perform the ________________ test, all of the observations in two samples are
combined into a single set and all of the values in the single set are ranked from smallest to
largest.
A. Wilcoxon Rank Sum
B. KruskalWallis
C. Wilcoxon signed rank
D. Sign Test 11777 Chapter 01  An Introduction to Business Statistics 58. The KruskalWallis H statistic can be approximated by the _____________ distritibution.
A. Normal
B. Chisquare
C. Z
D. t 59. In order to perform the ________________ test, all of the observations in p samples are
combined into a single set and all of the values in the single set are ranked from smallest to
largest. After ranking, sum of the ranks for each of the p samples are calculated.
A. Wilcoxon Rank Sum
B. KruskalWallis
C. Wilcoxon signed rank
D. Sign Test 60. Waxcom Electronics Inc. claims that a certain circuit board has a median operating life of
less than 20,000 hours. A random sample of 25 such circuit boards showed 8 circuit boards
failing before 20,000 hours and 17 circuit boards failing after 20,000 hours.
Assume the useful life of the circuit board is not normally distributed and state the null
hypothesis.
A. H0: Md ≥ 20,000
B. H0: Md ≤ 20,000
C. H0: Md < 20,000
D. H0: Md ≠ 20,000 61. Waxcom Electronics Inc. claims that a certain circuit board has a median operating life of
less than 20,000 hours. A random sample of 25 such circuit boards showed 8 circuit boards
failing before 20,000 hours and 17 circuit boards failing after 20,000 hours.
Assume the useful life of the circuit board is not normally distributed. At α = .05, can it be
concluded that the sample contradicts the claim of the company?
A. Reject the null hypothesis
B. Fail to reject the null hypothesis 11778 Chapter 01  An Introduction to Business Statistics 62. The EPA has stipulated that the PSI, "Pollution Standard Index" for clean air standards is
to be no more than 100 on the average. A random sample of 9 days for the city of Acorn
showed PSI readings of 144, 85, 90, 120, 150, 105, 93, 130 and 115.
The EPA wants to test to determine if Acorn's air is dirtier than the stipulated clean air
standards. Assume the population of PSI readings is highly nonnormal and state the null
hypothesis.
A. H0: Md ≥ 100
B. H0: Md ≤ 100
C. H0: Md ≠ 100
D. H0: Md > 100 63. The EPA has stipulated that the PSI, "Pollution Standard Index" for clean air standards is
to be no more than 100 on the average. A random sample of 9 days for the city of Acorn
showed PSI readings of 144, 85, 90, 120, 150, 105, 93, 130 and 115.
Assume the population of PSI readings is highly nonnormal. Is there significant evidence to
conclude that Acorn's air is dirtier than the stipulated clean air standards? Test at α = .05.
A. Reject the null hypothesis
B. Fail to reject the null hypothesis 64. The EPA has stipulated that the PSI, "Pollution Standard Index" for clean air standards is
to be no more than 100 on the average. A random sample of 9 days for the city of Acorn
showed PSI readings of 144, 85, 90, 120, 150, 105, 93, 130 and 115.
Assume the population of PSI readings is highly nonnormal. EPA wants to determine if there
is significant evidence to conclude that Acorn's air is dirtier than the stipulated clean air
standards. The test is conducted at α = .05 and the pvalue is found to be .254. Based on this
result, provide a one sentence managerial conclusion.
A. Acorn's air is dirtier than the EPA stipulated clean air standards.
B. Cannot conclude that Acorn's air is dirt...
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 Winter '14

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