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-semester-hour course without labs or a 4-semester-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? Use 0.05 level of significance.

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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-semester-hour course
without labs or a 4-semester-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? Use 0.05
level
of
significance.
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-semester-hour course without labs or a 4-semester-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? Use 0.05 level of significance.
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