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13. Random students are selected from a history class and asked the number of hours they studied for a recent test. The hours, and the resulting score on the test, are as follows. Hours 2 5 13 9 4 2 8 4. 7 Score 81 83 94 96 62 57 71 76 59 85 Can we say that there is a significant positive correlation among the data? (a = .05) %3D

13. Random students are selected from a history class and asked the number of hours they studied for a recent test. The hours, and the resulting score on the test, are as follows. Hours 2 5 13 9 4 2 8 4. 7 Score 81 83 94 96 62 57 71 76 59 85 Can we say that there is a significant positive correlation among the data? (a = .05) %3D

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Need question #13 and #14 answered with the curves
Correlation Test 13. Random students are selected from a history class and asked the number of hours they studied for a recent test. The hours, and the resulting score on the test, are as follows: Hours 13 9 4. 8 4 7 Score 81 83 94 96 62 57 71 76 59 85 Can we say that there is a significant positive correlation among the data? (a = .05) 14. An NPR report claims that lower GPA's are associated with students who watch a higher number of hours of television. You sample 10 students, and get the following data: GPA 3.1 2.4 2.0 3.8 2.2 3.4 2.9 3.2 3.7 3.5 Hrs. TV 14 10 20 7 25 9. 15 13 4 21 Can we say that there is a significant negative correlation among the data? (a = .10)
Transcribed Image Text:Correlation Test 13. Random students are selected from a history class and asked the number of hours they studied for a recent test. The hours, and the resulting score on the test, are as follows: Hours 13 9 4. 8 4 7 Score 81 83 94 96 62 57 71 76 59 85 Can we say that there is a significant positive correlation among the data? (a = .05) 14. An NPR report claims that lower GPA's are associated with students who watch a higher number of hours of television. You sample 10 students, and get the following data: GPA 3.1 2.4 2.0 3.8 2.2 3.4 2.9 3.2 3.7 3.5 Hrs. TV 14 10 20 7 25 9. 15 13 4 21 Can we say that there is a significant negative correlation among the data? (a = .10)
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