Answer to Question #249328 in Statistics and Probability for boo

Question

A lecturer wants to see if a PowerPoint presentation will change students’ understanding of a certain
concept in Statistics. Five students were randomly selected for the study and were given a pre-test
on their understanding of the statistical concept. Then, the students viewed the PowerPoint
presentation and afterwards were given a post-test on their understanding of the statistical concept.
The data are shown in the table below:
Student
1 2 3 4 5
Pre-test score 22 18 20 20 25
Post-test score 35 18 18 41 35
Test at a 5% level of significance whether the PowerPoint presentation makes a difference in the
average understanding of the statistical concept.

Answer 1

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