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requirement in many MBA programs. In the first semester 315 students have enrolled in the
course. The marketing research manager divided the country into seven regions of
approximately equal populations. The course enrollment values in each of the seven regions
are given below. The management wants to know if there is equal interest in the course across
all regions. Assume that H0: p1 = p2 = p3 = p4 = p5 = p6 = p7 is not rejected and state a one sentence
managerial conclusion.
A. It appears that the enrollment differs among all of the seven regions.
B. It appears that the enrollments across the seven regions are equal.
C. It appears that the enrollment differs among some of the seven regions.
D. We cannot draw conclusions about enrollment differences among the seven regions. AACSB: Reflective Thinking
Bloom's: Analysis
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11116 Chapter 01  An Introduction to Business Statistics 72. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20%
earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the
course. Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time
this semester. At the conclusion of the semester, in Dr. Johnson's class of 60 students, there
were 10 A's, 20 B's, 20 C's, 5 D's and 5 W's or F's. Assume that Dr. Johnson's class constitutes
a random sample. Dr Johnson wants to know if there is sufficient evidence to conclude that
the grade distribution of his class is different than the historical grade distribution.
Use
= .05, and determine the appropriate degrees of freedom and the rejection point
condition associated with this goodness of fit test.
A. 5, 11.1
B. 4, 11.1
C. 4, 9.5
D. 5, 9.5 χ2.05,4 = 9.49 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11117 Chapter 01  An Introduction to Business Statistics 73. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20%
earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the
course. Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time
this semester. At the conclusion of the semester, in Dr. Johnson's class of 60 students, there
were 10 A's, 20 B's, 20 C's, 5 D's and 5 W's or F's. Assume that Dr. Johnson's class constitutes
a random sample. Dr Johnson wants to know if there is sufficient evidence to conclude that
the grade distribution of his class is different than the historical grade distribution.
Calculate the expected values for A's and D's.
A. 10, 5
B. 10, 12
C. 12, 12
D. 12, 5
eA = (.1) (60) = 10; eB = (.2) (60) = 12
eC= (.3) (60) = 18; eD = (.2) (60) = 12
eF,W= (.2) (60) = 12 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11118 Chapter 01  An Introduction to Business Statistics 74. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20%
earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the
course. Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time
this semester. At the conclusion of the semester, in Dr. Johnson's class of 60 students, there
were 10 A's, 20 B's, 20 C's, 5 D's and 5 W's or F's. Assume that Dr. Johnson's class constitutes
a random sample. Dr Johnson wants to know if there is sufficient evidence to conclude that
the grade distribution of his class is different than the historical grade distribution.
Calculate the expected values for B's and C's.
A. 20, 20
B. 12, 12
C. 12, 18
D. 20, 18
eA = (.1) (60) = 10; eB = (.2) (60) = 12
eC= (.3) (60) = 18; eD = (.2) (60) = 12
eF,W= (.2) (60) = 12 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11119 Chapter 01  An Introduction to Business Statistics 75. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20%
earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the
course. Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time
this semester. At the conclusion of the semester, in Dr. Johnson's class of 60 students, there
were 10 A's, 20 B's, 20 C's, 5 D's and 5 W's or F's. Assume that Dr. Johnson's class constitutes
a random sample. Dr Johnson wants to know if there is sufficient evidence to conclude that
the grade distribution of his class is different than the historical grade distribution.
Calculate the chisquare statistic.
A. 9.5
B. 3.03
C. 2.33
D. 16.4 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: ChiSquare 11120 Chapter 01  An Introduction to Business Statistics 76. In the past, of all the students enrolled in "Basic Business Statistics" 10% earned A's 20%
earned B's, 30% earned C's, 20% earned D's and the rest either failed or withdrew from the
course...
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This document was uploaded on 01/20/2014.
 Winter '14

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