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Fifty migraine patients are randomly selected from hospital records. Half of the patients are told to drink ice water and sit in the dark when they next experience a migraine; the remaining patients are told to use neither of these possible remedies. Participants then report back as to relief, if any. Serious faults of this experimental design include which of the following? * I. Lack of Randomization. II. Probably confounding variables.II. Lack of blinding a) I only b) II only C) II only d) I and II e) I and II

Fifty migraine patients are randomly selected from hospital records. Half of the patients are told to drink ice water and sit in the dark when they next experience a migraine; the remaining patients are told to use neither of these possible remedies. Participants then report back as to relief, if any. Serious faults of this experimental design include which of the following? * I. Lack of Randomization. II. Probably confounding variables.II. Lack of blinding a) I only b) II only C) II only d) I and II e) I and II

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Fifty migraine patients are randomly selected from hospital records. Half of the patients are told to drink ice water and sit in the dark when they next experience a migraine; the remaining patients are told to use neither of these possible remedies. Participants then report back as to relief, if any. Serious faults of this experimental design include which of the following? * I. Lack of Randomization. II. Probably confounding variables. III. Lack of blinding a) I only b) Il only C) III only d) I andII e) I and II
Transcribed Image Text:Fifty migraine patients are randomly selected from hospital records. Half of the patients are told to drink ice water and sit in the dark when they next experience a migraine; the remaining patients are told to use neither of these possible remedies. Participants then report back as to relief, if any. Serious faults of this experimental design include which of the following? * I. Lack of Randomization. II. Probably confounding variables. III. Lack of blinding a) I only b) Il only C) III only d) I andII e) I and II
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