In searching for an item (e.g., a roadside traffic sign, a lost earring, or a tumor in
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a. One goal of the research was to compare the mean reaction times of subjects in the two experimental conditions. Explain why the data should be analyzed as a paired difference experiment.
b. If a visual search has no memory, then the main reaction times in the two conditions will not differ. Specify H0 and Ha for testing the “no-memory” theory.
c. The test statistic was calculated as t = 1.52 with p-value = .15. Draw the appropriate conclusion.
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