A New Drug Is Supposed to Be Effective in Reducing

Question 167

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A new drug is supposed to be effective in reducing motion sickness in people who are prone to such illness. A group of subjects are given a placebo and taken for a ride in a car over a preplanned route. At the end of the trip the subjects are asked to rate their illness on a 20-point scale. A week later the same subjects are given the new drug and taken for an identical ride and asked to rate their degree of illness again. The data are: A new drug is supposed to be effective in reducing motion sickness in people who are prone to such illness. A group of subjects are given a placebo and taken for a ride in a car over a preplanned route. At the end of the trip the subjects are asked to rate their illness on a 20-point scale. A week later the same subjects are given the new drug and taken for an identical ride and asked to rate their degree of illness again. The data are:

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