I wanted to test if the mean Exam 3 score in this course was different than the mean Exam 2 score. To conduct this test I used the 30 students in my course last semester as my sample. I first calculated the difference in scores between Exam 2 and Exam 3 ("Exam 2 score - Exam 3 score"). The sample mean of these differences is 2.0 and the sample standard deviation of the differences is 3.0. What is your conclusion in the context of the study?  Group of answer choices 1. The mean Exam 3 score in this course was NOT different than the mean Exam 2 score 2. The mean Exam 3 score in this course was different than the mean Exam 2 score

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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I wanted to test if the mean Exam 3 score in this course was different than the mean Exam 2 score. To conduct this test I used the 30 students in my course last semester as my sample. I first calculated the difference in scores between Exam 2 and Exam 3 ("Exam 2 score - Exam 3 score"). The sample mean of these differences is 2.0 and the sample standard deviation of the differences is 3.0. What is your conclusion in the context of the study? 

Group of answer choices
1. The mean Exam 3 score in this course was NOT different than the mean Exam 2 score
2. The mean Exam 3 score in this course was different than the mean Exam 2 score
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