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A professor gives a statistics exam. The exam has 25 possible points. The scores for the students in the first classroom are as follows:

 

A professor gives a statistics exam. The exam has 25 possible points. The scores for the students in the first classroom are as follows: 24 25 19 15 20 19 17 25 17 Calculate the sample size, n, and the sample mean, M. n = M = While grading the exam, the professor realizes that one of the questions covered material that was not yet covered in the lectures. This question was worth 2 points, so she decides to add 2 points to everyone's score. Calculate the new n and M. n = M II

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