69. A study is conducted to assess the effectiveness of a new medication for the treatment of patients with hypertension. To establish the difference between the medica and a placebo, alpha is set at 0.05 and beta at 0.20 to determine the sample size needed for the study. Group X receives the medication, and Group Y receives the placebo. On completion of the study of 100 patients, the mean diastolic blood pressure in Group X is 82 mm Hg, and the mean diastolic blood pressure in Group Y is mm Hg. The level of statistical significance is determined to be p = 0.07, and the power is 0.65. Increasing the sample size of this study will most likely have which of the following effects on the study outcome? OA) Decreased likelihood of a Type I error OB) Decreased likelihood-of-a-Type Il error OC) Increased likelihood of a Type I error OD) Increased-likelihood of a Type Il-error OE) Cannot-be determined
69. A study is conducted to assess the effectiveness of a new medication for the treatment of patients with hypertension. To establish the difference between the medica and a placebo, alpha is set at 0.05 and beta at 0.20 to determine the sample size needed for the study. Group X receives the medication, and Group Y receives the placebo. On completion of the study of 100 patients, the mean diastolic blood pressure in Group X is 82 mm Hg, and the mean diastolic blood pressure in Group Y is mm Hg. The level of statistical significance is determined to be p = 0.07, and the power is 0.65. Increasing the sample size of this study will most likely have which of the following effects on the study outcome? OA) Decreased likelihood of a Type I error OB) Decreased likelihood-of-a-Type Il error OC) Increased likelihood of a Type I error OD) Increased-likelihood of a Type Il-error OE) Cannot-be determined
Essentials of Pharmacology for Health Professions
7th Edition
ISBN:9781305441620
Author:WOODROW
Publisher:WOODROW
Chapter25: Cardiovascular Drugs
Section: Chapter Questions
Problem 23CRQ
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Transcribed Image Text:69. A study is conducted to assess the effectiveness of a new medication for the treatment of patients with hypertension. To establish the difference between the medication
and a placebo, alpha is set at 0.05 and beta at 0.20 to determine the sample size needed for the study. Group X receives the medication, and Group Y receives the
placebo. On completion of the study of 100 patients, the mean diastolic blood pressure in Group X is 82 mm Hg, and the mean diastolic blood pressure in Group Y is 94
mm Hg. The level of statistical significance is determined to be p = 0.07, and the power is 0.65. Increasing the sample size of this study will most likely have which of
the following effects on the study outcome?
OA) Decreased likelihood of a Type I error
OB)- Decreased-likelihood of a Type Il error
OC) Increased likelihood of a Type I error
OD) Increased likelihood of a Type Il-error
OE) Cannot be determined
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