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anna8352
28.05.2021 •
Mathematics
In order to better prepare for her 8:00am classes, a statistics student designs an experiment to see how various strategies improve test scores. Completing homework assignments and eating a good breakfast are often said to be good ways to improve focus for class. She assigns half of her students homework assignments to practice and half no additional homework assignments. Within these groups, half of the participants are instructed to eat a balanced breakfast the morning of the test and the other half are asked to skip breakfast. She then measures exam performance on a test with scores ranging from 1-10.
No Homework Homework
Eating Breakfast  7 8
8 10
9 9
7 9
6 8
9 10
5 10
Skipping Breakfast 6 6
7 5
4 7
6 6
7 7
7 5
5 3
Required:
a. What statistical test should you perform? Be as specific as possible.
b. Write a sentence describing the main effect of breakfast, include F, df, and p-value. Write a second sentence describing which group scored higher/lower (include means).
c. Write a sentence describing the main effect of homework, include F, df, and p-value. Write a second sentence describing which group scored higher/lower (include means).
d. Write a sentence describing if there was a significant interaction effect or not (include F, df, p-value).
e. Graph the interaction effect using Excel.
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