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Unformatted text preview: om's: Analysis
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11127 Chapter 01  An Introduction to Business Statistics 84. A human resource manager is interested in whether absences occur during the week with
equal frequency. The manager took a random sample of 100 absences and created the
following table: Calculate the expected absences for all 5 days.
A. 28
B. 20
C. 12
D. 25
100/5 = 20 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11128 Chapter 01  An Introduction to Business Statistics 85. A human resource manager is interested in whether absences occur during the week with
equal frequency. The manager took a random sample of 100 absences and created the
following table: Calculate the value of the chisquare statistic.
A. 6.80
B. 9.49
C. 27.2
D. 1.36 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11129 Chapter 01  An Introduction to Business Statistics 86. A human resource manager is interested in whether absences occur during the week with
equal frequency. The manager took a random sample of 100 absences and created the
following table: How many degrees of freedom are associated with the chisquare test? Use α = .05 and
determine the rejection point condition of the chisquare statistic.
A. 5, 9.49
B. 5, 6.80
C. 4, 9.49
D. 4, 6.80
d.f. = 5  1 = 4
χ2.05,4 = 9.488 AACSB: Analytic
Bloom's: Application
Difficulty: Easy
Learning Objective: 1
Topic: ChiSquare 11130 Chapter 01  An Introduction to Business Statistics 87. A human resource manager is interested in whether absences occur during the week with
equal frequency. The manager took a random sample of 100 absences and created the
following table: At a significance level of .05, test Ho: the probabilities are equal for all five days.
A. Reject H0
B. Fail to reject H0
χ2 = 6.80 < 9.488, fail to reject Ho AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11131 Chapter 01  An Introduction to Business Statistics 88. At a recent meeting of educational researchers, comparisons were made between the type
of college freshmen attend and the numbers who drop out. A random sample of freshmen
shows the following results: Determine the expected frequencies for the two cells of 4yr public institutions that will be
used in the chisquare test of independence.
A. 10.9, 25.1
B. 10.0, 26.0
C. 18.0, 18.0
D. 39.4, 102.6 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11132 Chapter 01  An Introduction to Business Statistics 89. At a recent meeting of educational researchers, comparisons were made between the type
of college freshmen attend and the numbers who drop out. A random sample of freshmen
shows the following results: Determine the expected frequencies for the freshmen who drop out of 2year institutions that
will be used in the chisquare test of independence.
A. 15.0, 9.0
B. 10.0, 10.9
C. 18.0, 18.0
D. 11.7, 92.6 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11133 Chapter 01  An Introduction to Business Statistics 90. At a recent meeting of educational researchers, comparisons were made between the type
of college freshmen attend and the numbers who drop out. A random sample of freshmen
shows the following results: At a significance level of .05, determine the appropriate degrees of freedom and the rejection
point condition for this test.
A. 6, 4.80
B. 7, 14.1
C. 4, 9.49
D. 3, 7.81
(r1) (c1) = (21) (41) = 3 degrees of freedom
χ2.05,3 = 7.815 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11134 Chapter 01  An Introduction to Business Statistics 91. At a recent meeting of educational researchers, comparisons were made between the type
of college freshmen attend and the numbers who drop out. A random sample of freshmen
shows the following results: Calculate the chisquare statistic for this test of independence.
A. 7.81
B. 4.80
C. 2.50
D. 6.67 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11135 Chapter 01  An Introduction to Business Statistics 92. At a recent meeting of educational researchers, comparisons were made between the type
of college freshmen attend and the numbers who drop out. A random sample of freshmen
shows the following results: Use a significance level of .05 and determine if the type of school and the drop rate are
independent (null hypothesis is that dropout rate is independent of type of school)
A. Reject H0
B. Fail to reject H0
Ho: Dropout rate is independent of type of school
Ha: Dropout rate and type of school are dependent
χ2 = 4.8046 χ2.05,3 = 7.815
Reject Ho if χ2 > χ2.05,3 failed to reject AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 3
Topic: ChiSquare 11136 Chapter 01  An Introduction to Business Statistics 93. In a study of car accidents and drivers who use cell phones, the following sample data are
collected: Determine the expected frequencies those who had accidents in t...
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 Winter '14

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