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Q1) A high school counselor wishes to see if the average number of dropout in his school is 18.He reviews the last 17 years and finds that the number of dropouts each year is as shown. Test her claim at the .01 alpha level.

12 18 24 16 21 20 18 19
19 22 25 16 18 19 19 20 23

Q2) Test the teachers hypothesis that there is a significant difference between the pre and post tests.

Q3) Test the hypothesis that there is significant difference on the post test scores between sections A and B.

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