Question
In: Math
A professor in the accounting department of a business school claims that there is much more...
A professor in the accounting department of a business school claims that there is much more variability in the final exam scores of students taking the introductory accounting course as a requirement than for students taking the course as part of a major in accounting. Random samples of 16 non-accounting majors (group 1) and 15 accounting majors (group 2) are taken from the professor's class roster in his large lecture, and the following results are computed based on the final exam scores:
n1 = 16, S12 = 154.6, n2 = 15, S22 = 48.5
(a) At the 0.05 level of significance, is there evidence to support the professor's claim?
(b) What assumptions do you make here about the two populations in order to justify your use of the F test?
Solutions
milcah answered 1 month agoRelated Solutions
Question 35 A professor in the Accountancy Department of a business school indicated that there is...
Question 35
A professor in the Accountancy Department of a business school
indicated that there is much more variability in the final exam
scores of students taking the introductory accounting course as a
requirement than for students taking the course as part of their
major. Random samples of 16 non-accounting majors and 10 accounting
majors taken from the professor's class roster in his large lecture
and the following results are computed based on the final exam
scores:
Non-Accounting Major (1)...
A professor in the school of business at a certain university wants to investigate the claim...
A professor in the
school of business at a certain university wants to investigate the
claim that the prices of new textbooks in the campus store are
higher than a competing national online bookstore by more than 50
cents. The professor randomly chooses required texts for 12
business school courses. Use α=0.05α=0.05. The data is given in the
table below.
Book
Campus Store
Online Store
A
108.51
109.42
B
200.06
201.93
C
223.52
226.39
D
186.12
183.9
E
121.65
122.13...
A professor in the school of business at a certain university wants to investigate the claim...
A professor in the
school of business at a certain university wants to investigate the
claim that the prices of new textbooks in the campus store are
higher than a competing national online bookstore. The professor
randomly chooses required texts for 12 business school courses. The
data is given in the table below.
Book Number
Campus Store
Online Store
Book 1
125.45
124.27
Book 2
88.37
86.21
Book 3
230.98
229.6
Book 4
151.8
153.02
Book 5
236.44
237.4
Book...
A professor in the school of business at a certain university wants to investigate the claim...
A professor in the school of business at a certain university
wants to investigate the claim that the prices of new textbooks in
the campus store are higher than a competing national online
bookstore by more than 50 cents. The professor randomly chooses
required texts for 12 business school courses. Use
α=0.05
. The data is given in
the table below.
Book
Campus Store
Online Store
A
171.79
171.56
B
155.76
154.72
C
108.11
106.57
D
161.67
156.68
E
151.47...
A professor in the School of Business wants to investigate the prices of new textbooks in...
A professor in the School of Business wants to investigate the
prices of new textbooks in the campus bookstore and the Internet.
The professor randomly chooses the required texts for 12 business
school courses and compares the prices in the two stores. The
results are as follows:
Book
Campus Store
Internet Price
1
$55.00
$50.95
2
47.50
45.75
3
50.50
50.95
4
38.95
38.50
5
58.70
56.25
6
49.90
45.95
7
39.95
40.25
8
41.50
39.95
9
42.25
43.00
10...
A professor in the School of Business wants to investigate the prices of new textbooks in...
A professor in the School of Business wants to investigate the
prices of new textbooks in the campus bookstore and the Internet.
The professor randomly chooses the required texts for 12 business
school courses and compares the prices in the two stores. The
results are as follows:
Book
Campus Store
Internet Price
1
$55.00
$50.95
2
47.50
45.75
3
50.50
50.95
4
38.95
38.50
5
58.70
56.25
6
49.90
45.95
7
39.95
40.25
8
41.50
39.95
9
42.25
43.00
10...
A professor in the School of Business wants to investigate the prices of new textbooks in...
A professor in the School of Business wants to investigate the
prices of new textbooks in the campus bookstore and the Internet.
The professor randomly chooses the required texts for 12 business
school courses and compares the prices in the two stores. The
results are as follows:
Book
Campus Store
Internet Price
1
$55.00
$50.95
2
47.50
45.75
3
50.50
50.95
4
38.95
38.50
5
58.70
56.25
6
49.90
45.95
7
39.95
40.25
8
41.50
39.95
9
42.25
43.00
10...
Use CRC to design information system for a school. Use following classes: Professor, Class, School, Department,...
Use CRC to design information system for a school. Use following
classes: Professor, Class, School, Department, and Student,
Identify the main responsibilities and collaborators for each
class. Then draw a UML class diagram showing the relationships (and
multiplicities) between the classes.
Professor Jennings claims that only 35% of the students at Flora College work while attending school....
Professor Jennings claims that only 35% of the students at Flora
College work while attending school. Dean Renata thinks that the
professor has underestimated the number of students with part-time
or full-time jobs. A random sample of 85 students shows that 38
have jobs. Do the data indicate that more than 35% of the students
have jobs? Use a 5% level of significance.
What is the level of significance?
State the null and alternate hypotheses.
What is the value of...
Professor Jennings claims that only 35% of the students at Flora College work while attending school....
Professor Jennings claims that only 35% of the students at Flora
College work while attending school. Dean Renata thinks that the
professor has underestimated the number of students with part-time
or full-time jobs. A random sample of 82 students shows that 36
have jobs. Do the data indicate that more than 35% of the students
have jobs? Use a 5% level of significance.
What are we testing in this problem?
single proportionsingle mean
(a) What is the level of significance?...
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