T1W9 TS Q12 – Selective High School

Students who study for fewer than 30 minutes a day score an average of 60 on the final exam.

Students who study between 30 minutes and 1 hour a day score an average of 65.

Students who study between 1 and 2 hours a day score an average of 75.

Students who study more than 3 hours a day score an average of 85.

Therefore, the more a student studies, the higher the student is likely to score on the final exam.

Which of the following statements, if true, most weakens the argument above?

A single student studied 45 minutes a day and scored an 85. The students who studied between 2 and 3 hours a day scored an average of 70. Students who study longer tend to be more disciplined. No student studied more than 4 hours a day.

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Which of the following statements, if true, most weakens the argument above?