At One SAT Test Site Students Taking the Test for a Second

question 743

Multiple Choice

At one SAT test site students taking the test for a second time volunteered to inhale supplemental
Oxygen for 10 minutes before the test. In fact, some received oxygen, but others (randomly Assigned) were given just normal air. Test results showed that 42 of 66 students who breathed Oxygen improved their SAT scores, compared to only 35 of 63 students who did not get the oxygen.
Which procedure should we use to see if there is evidence that breathing extra oxygen can help
Test-takers think more clearly?

• A) 2-sample \(t\)-test
• B) matched pairs \(t\)-test
• C) 2-proportion \(z\)-test
• D) 1 -sample \(t\)-test
• E) 1-proportion z-test

---

Definitions:

BCG Matrix

A strategic business tool designed by the Boston Consulting Group to help organizations evaluate and manage the relative positions of their business units or products in terms of market growth rate and market share.

Stars

High-performing and highly valuable members or units within an organization known for contributing significantly to its success.

Question Marks

Products or business units that operate in high growth markets but have a low market share, often requiring significant resources to become profitable.

Goal Displacement

A situation where the primary goal is overshadowed by a secondary goal, leading to a shift in focus.