6. Analysis of variance has long been used in providing evidence of the effectiveness of pharmaceutical drugs. Such evidence is required before Philippine Food and Drugs Authority (PFDA) will allow a drug to be marketed. In a recent test of the effectiveness of a new sleeping pill, three groups of 25 patients each were given the following treatments. The first group was given the drug, the second group was given the placebo, and the third group was given no treatment at all. The number of minutes it took each person to fall asleep was recorded. The results are as follows: Drug group: 12 17 34 11 5 42 18 27 2 37 50 32 12 27 21 10 4 33 63 22 41 19 28 29 8 Placebo group: 44 32 28 30 22 12 3 12 42 13 27 54 56 32 37 28 22 22 24 9 20 4 13 42 67

6. Analysis of variance has long been used in providing evidence of the effectiveness of pharmaceutical drugs. Such evidence is required before Philippine Food and Drugs Authority (PFDA) will allow a drug to be marketed. In a recent test of the effectiveness of a new sleeping pill, three groups of 25 patients each were given the following treatments. The first group was given the drug, the second group was given the placebo, and the third group was given no treatment at all. The number of minutes it took each person to fall asleep was recorded. The results are as follows: Drug group: 12 17 34 11 5 42 18 27 2 37 50 32 12 27 21 10 4 33 63 22 41 19 28 29 8 Placebo group: 44 32 28 30 22 12 3 12 42 13 27 54 56 32 37 28 22 22 24 9 20 4 13 42 67

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 2E

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