Question

Alexander Todorov and associates conducted an experiment in which 695 individuals were shown black and white photographs of individuals running for Congress (either the U.S. Senate or House of Representatives). In each instance, the individuals were exposed to the photograph of both the winner and runner-up (in random order) for 1 second. The individuals were then asked to decide who they believed was more competent (and, therefore, more likely to receive their vote). Of the 695 individuals exposed to the photos, 469 correctly predicted the winner of the race.
Do the results suggest that a quick 1-second view of a black and white photo represents enough information to judge the winner of an election (based on perceived level of competence of the individual) more often than not? Use the α = 0.05 level of significance.


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  • CreatedApril 28, 2015
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