A study was made to determine if the subject matter in a physics course is better understood when a lab constitutes part of the course. Students were randomly selected to participate in either a 3 hour course without labs or a 4 hour course with labs. In the section with labs, 11 students made an average grade of 85 with a standard deviation of 4.7, and in the section without labs, 17 students made an average grade of 79 with a standard deviation of 6.1. Would you say that the laboratory course increases the average grade by as much as 8 points? Assume the populations to have approximately unequal variances. What is the appropriate degrees of freedom for this test?
A study was made to determine if the subject matter in a physics course is better understood when a lab constitutes part of the course. Students were randomly selected to participate in either a 3 hour course without labs or a 4 hour course with labs. In the section with labs, 11 students made an average grade of 85 with a standard deviation of 4.7, and in the section without labs, 17 students made an average grade of 79 with a standard deviation of 6.1. Would you say that the laboratory course increases the average grade by as much as 8 points? Assume the populations to have approximately unequal variances. What is the appropriate degrees of freedom for this test?
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Transcribed Image Text:A study was made to determine if the subject matter in a physics course is better understood
when a lab constitutes part of the course. Students were randomly selected to participate in
either a 3 hour course without labs or a 4 hour course with labs. In the section with labs, 11
students made an average grade of 85 with a standard deviation of 4.7, and in the section
without labs, 17 students made an average grade of 79 with a standard deviation of 6.1. Would
you say that the laboratory course increases the average grade by as much as 8 points? Assume
the populations to have approximately unequal variances.
What is the appropriate degrees of freedom for this test?
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