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

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Definitions:

Dividends

Payments made by a corporation to its shareholders, typically from earnings, as a distribution of profits.

Dividends

Payments made by a corporation to its shareholder members, usually derived from the company's earnings.

Consolidated Statement of Retained Earnings

A financial statement that shows the changes in a corporation's retained earnings over a specific period, combining the retained earnings of the parent company with those of its subsidiaries.

FVE Method

Refers to the Fair Value Evaluation method, a technique for assessing an asset's worth at its current market value.