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you want to estimate the difference between the average grades on a certain math exam before...

you want to estimate the difference between the average grades on a certain math exam before students take the associated math class. (Hopefully you do better after taking the class right?) You take random samples of 5 students who have taken the class and 5 students who have not taken the class. You get the following results (grades).

Not Taken

54

25

73

23

42

taken

82

76

98

43

38

Math   Statistics-And-Probability   
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