Ap statistics 2000 scoring guidelines question 1

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Unformatted text preview: tion Board. AP® Statistics 2000 ─ Scoring Guidelines Question 1 Solution a. Drug A produced average pain relief in the 55-70 range (or averaging approximately 65) for strengths between 210 and 400. Pain relief doesn’t appear to depend on strength over the range 210 to 400. b. Drug B didn’t produce much (if any) pain relief for strengths less than about 270. For strengths between 270 and 400, pain relief increased steadily with dosage. c. Drug A at strength 210: Choose drug A because the pain relief is about 65 (or in the 55 - 70 range) for all dosage levels whereas drug B needs to be given at 330 mg or higher to achieve pain relief of at least 50. Since the lowest dosage of drug A tested was 210 and all levels are about equally effective, prescribe 210 mg. Scoring Part (a) is Essentially correct if the answer includes both a statement that the pain relief is in the 55-70 range (or approximately 65) and that pain relief doesn’t depend on strength. Partially correct if the answer includes only one of the two required statements. Part (b) is Essentially correct if the answer includes both a statement that there is no pain relief for strengths below approximately 270 and that pain relief increases with strength above 270. Partially correct if the answer includes only one of the two required statements. Copyright © 2000 College Entrance Examination Board and Educational Testing Service. All rights reserved. AP is a registered trademark of the College Entrance Examination Board. AP® Statistics 2000 ─ Scoring Guidelines Question 1 continued part (c) is Essentially correct if response is drug A at strength 210, with justification of choice of drug and choice of dosage. Justification of drug A must involve explicit comparison to drug B. Partially correct if response is drug A at strength 210, with incomplete or no justification, OR response is drug A at a dosage other than 210 (or no mention of dosage) with justification of choice of drug A over drug B, OR response is drug B at strength 330 with justification of choice o...
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This note was uploaded on 09/06/2013 for the course MATH AP Statist taught by Professor Mosby during the Spring '13 term at Silverton High School, Silverton.

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