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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Q: What cutoff score(s) should be used? ±3.356   ±2.447   ±3.708   +1.943

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A: Given, -x1 = 893, n1 = 67, s1 = 282 -x2 = 1180, n2 = 49, s2 = 371 α = Level of significance = 0.05

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A: See the hand written solution

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A:

Q: health researcher read that a 150-pound college-aged, male can burn an average of 530 calories per…

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A:

Q: local church parish wants to raise money to add to their campus. In a sample from a previous fund…

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Q: A health researcher read that a 150-pound college- aged, male can burn an average of 530 calories…

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