MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
Bartleby Related Questions Icon

Related questions

Question

Take your time answer the questions, this is all one question, please answer correctly, thank you very much, will write an wonderful review when solutions are done.

6. Assumptions underlying the independent-measures t test
A professor believes that students at her large university who exercise daily perform better in statistics classes. Since all students at the university are
required to take Introduction to Statistics, she randomly selects 17 students who exercise daily and 22 students who exercise at most once per week.
She obtains their scores in the final exam in Introduction to Statistics and finds that the students who did not exercise daily primarily produced scores in
the 90s, with some scores in the 80s and a very few scores in the 70s and 60s. The students who did exercise daily also had a large number of scores in
the 90s and an almost equal number in the 60s, with very few scores in between.
Would it be valid for the professor to use the independent-measures t test to test whether students at her large university who exercise daily perform
better in statistics classes?
O No, because the two populations studied are not independent.
O No, because the two populations from which the samples are selected do not appear to be normally distributed.
O Yes, because the two populations from which the samples are selected have equal variances.
O Yes, because none of the assumptions of the independent-measures t test are violated.
expand button
Transcribed Image Text:6. Assumptions underlying the independent-measures t test A professor believes that students at her large university who exercise daily perform better in statistics classes. Since all students at the university are required to take Introduction to Statistics, she randomly selects 17 students who exercise daily and 22 students who exercise at most once per week. She obtains their scores in the final exam in Introduction to Statistics and finds that the students who did not exercise daily primarily produced scores in the 90s, with some scores in the 80s and a very few scores in the 70s and 60s. The students who did exercise daily also had a large number of scores in the 90s and an almost equal number in the 60s, with very few scores in between. Would it be valid for the professor to use the independent-measures t test to test whether students at her large university who exercise daily perform better in statistics classes? O No, because the two populations studied are not independent. O No, because the two populations from which the samples are selected do not appear to be normally distributed. O Yes, because the two populations from which the samples are selected have equal variances. O Yes, because none of the assumptions of the independent-measures t test are violated.
Expert Solution
Check Mark
Knowledge Booster
Background pattern image
Recommended textbooks for you
Text book image
MATLAB: An Introduction with Applications
Statistics
ISBN:9781119256830
Author:Amos Gilat
Publisher:John Wiley & Sons Inc
Text book image
Probability and Statistics for Engineering and th...
Statistics
ISBN:9781305251809
Author:Jay L. Devore
Publisher:Cengage Learning
Text book image
Statistics for The Behavioral Sciences (MindTap C...
Statistics
ISBN:9781305504912
Author:Frederick J Gravetter, Larry B. Wallnau
Publisher:Cengage Learning
Text book image
Elementary Statistics: Picturing the World (7th E...
Statistics
ISBN:9780134683416
Author:Ron Larson, Betsy Farber
Publisher:PEARSON
Text book image
The Basic Practice of Statistics
Statistics
ISBN:9781319042578
Author:David S. Moore, William I. Notz, Michael A. Fligner
Publisher:W. H. Freeman
Text book image
Introduction to the Practice of Statistics
Statistics
ISBN:9781319013387
Author:David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:W. H. Freeman