Question: The Scholastic Aptitude Test SAT contains three parts critical reading

The Scholastic Aptitude Test (SAT) contains three parts: critical reading, mathematics, and writing. Each part is scored on an 800-point scale. Information on test scores for the 2009 version of the SAT is available at the College Board website. A sample of SAT scores for six students follows.
a. Using a .05 level of significance, do students perform differently on the three portions of the SAT?
b. Which portion of the test seems to give the students the most trouble? Explain.

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