economist wonders in corporate productivity in some countries is more volache than in other countries. One measure of a company A random sample of leading companies in France gave the following percentage yields based on assets. 4.9 5.1 3.1 3.6 2.7 3.5 2.8 4.4 6.8 2.9 3.2 7.2 6.5 5.0 3.3 2.8 2.5 4.5 Verify that the sample variance is s² = 2.032 for this sample of French companies. 5.7 3.4 4.1 Another random sample of leading companies in Germany gave the following percentage yields based on assets. 2.6 3.6 3.6 4.9 5.5 5.5 5.0 5.4 3.2 3.5 3.7 2.6 2.8 3.0 3.0 2.2 4.7 3.2 1.201 for this sample of German companies. What are the degrees of freedom? df France df Germany Find the upper tail F-critical value. (Use 2 decimal places.) Verify that s² Use Excel to test the if there is a difference in the population variance of percentage yields for leading companies in France and Germany. Use a 5% level of significance. (a) Find the value of the F statistic. (Use 2 decimal places.) uctivity is annual percentage yield based on cocal company assets. (b) From the results of the F-test, which test for the difference in means will follow? O Two-sample Test for Difference in Means assuming Equal Variances. O Two-sample Test for Difference in Means assuming Unequal Variances.
economist wonders in corporate productivity in some countries is more volache than in other countries. One measure of a company A random sample of leading companies in France gave the following percentage yields based on assets. 4.9 5.1 3.1 3.6 2.7 3.5 2.8 4.4 6.8 2.9 3.2 7.2 6.5 5.0 3.3 2.8 2.5 4.5 Verify that the sample variance is s² = 2.032 for this sample of French companies. 5.7 3.4 4.1 Another random sample of leading companies in Germany gave the following percentage yields based on assets. 2.6 3.6 3.6 4.9 5.5 5.5 5.0 5.4 3.2 3.5 3.7 2.6 2.8 3.0 3.0 2.2 4.7 3.2 1.201 for this sample of German companies. What are the degrees of freedom? df France df Germany Find the upper tail F-critical value. (Use 2 decimal places.) Verify that s² Use Excel to test the if there is a difference in the population variance of percentage yields for leading companies in France and Germany. Use a 5% level of significance. (a) Find the value of the F statistic. (Use 2 decimal places.) uctivity is annual percentage yield based on cocal company assets. (b) From the results of the F-test, which test for the difference in means will follow? O Two-sample Test for Difference in Means assuming Equal Variances. O Two-sample Test for Difference in Means assuming Unequal Variances.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:An economist wonders if corporate productivity in some countries is more volatile than in other countries. One measure of a company's productivity is annual percentage yield based on total company assets.
A random sample of leading companies in France gave the following percentage yields based on assets.
2.7 3.5 2.8
4.9 5.1 3.1 3.6
4.4 5.7 3.4
6.8 2.9 3.2 7.2 6.5 5.0 3.3 2.8 2.5 4.5
Verify that the sample variance is s² = 2.032 for this sample of French companies.
4.1
Another random sample of leading companies in Germany gave the following percentage yields based on assets.
5.5 5.0 5.4 3.2
2.6 3.6 3.6 4.9 5.5
3.5 3.7 2.6 2.8 3.0
3.0 2.2 4.7 3.2
1.201 for this sample of German companies.
Verify that s²
Use Excel to test the if there is a difference in the population variance of percentage yields for leading companies in France and Germany. Use a 5% level of significance.
(a) Find the value of the F statistic. (Use 2 decimal places.)
What are the degrees of freedom?
df France
df Germany
Find the upper tail F-critical value. (Use 2 decimal places.)
(b) From the results of the F-test, which test for the difference in means will follow?
O Two-sample Test for Difference in Means assuming Equal Variances.
O Two-sample Test for Difference in Means assuming Unequal Variances.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 12 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman