# A crossover trial is a type of experiment used to compare

## Problem 9E Chapter 6.8

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition

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Problem 9E

A crossover trial is a type of experiment used to compare two drugs. Subjects take one drug for a period of time, then switch to the other. The responses of the subjects are then compared using matched pair methods. In an experiment to compare two pain relievers, seven subjects took one pain reliever

Can you conclude that the mean response differs between the two drugs?

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EXPERIMENTAL DESIGN Within Subjects ● A single group of participants serves in all conditions of the experiment ● Advantages ○ Eliminates need for random assignment ○ More powerful ○ Fewer participants needed ● Disadvantages ○ Order effects = when the sequence or order of experimental conditions of the IV influences...

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A crossover trial is a type of experiment used to compare

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