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Repeated measures experiment

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In a concept formation study, 12 subjects were randomly assigned to three different experimental conditions and then given four trials in the solution of a problem. For each trial, the number of minutes taken to solve the problem was recorded. The results were as follows:

(See the attached file for data table)

a) State and verify the model assumptions
b) Assuming all model assumptions are valid, what do the data indicate? Discuss your findings.

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Solution Summary

This is an example of the basic repeated measures experiment where the study is a completely randomized design (treatments are randomly assigned to experimental units with no blocking factors), and then 4 measurements are made on each unit over time. The tool used for the analysis was SAS.

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