AP Statistics Practice Test 2

This is Practice Test 2 for the multiple-choice section of the Advanced Placement Statistics Exam. The test consists of 40 questions, each followed by five possible answers. Choose the response that best answers each question. You have 90 minutes to complete the test.

Test Results

Here are the overall results: 0 correct; 0 incorrect. Color-coded results for individual questions appear below.

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Blue: No answer, yet.
Green: Correct answer.
Red: Incorrect answer.

Note: Each numbered test question is a link. To review a question, tap its link.

Problem 1

A psychologist wanted to test the effect of caffeine on memory recall. She randomly assigned participants to a control or treatment group. The treatment group received 200 mg of caffeine; the control group, a placebo. Then, she recorded the number of words recalled from a memory test. The P-value for the experiment was 0.17. What can you conclude from the P-value?

(A) The margin of error for the memory test was ±17%.
(B) There is a 17% chance that the difference in recall scores occurred by chance.
(C) The experimental group recalled 17% more words than the control group.
(D) The control group recalled 17% more words than the experimental group.
(E) There is a 17% chance that the placebo was ineffective.

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AP Statistics Practice Test 2

Test Results

Problem 1

Solution

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