Levitt and Dubner support the claim with the reason: Sumo wrestlers who win eight or more matches earn a higher rank than those who do not. Which evidence supports this reason?A wrestler with ten victories would not throw a match because of the overall incentive to win.The actual win percentage for 7–7 wrestlers is higher than the predicted win percentage.
What counterclaim might be made against the statistical evidence in the previous question?Sumo wrestling is an ancient tradition held sacred in Japan, so it cannot be corrupted.There may be close ties between rival stables of sumo wrestlers.A 7–7 wrestler might be more motivated to win and therefore perform better.Wrestlers would not cheat because they want to win the $20,000 bonus prizes.
What logical evidence do Levitt and Dubner present in response to the counterclaim that a 7–7 wrestler might be more motivated to win and therefore perform better?In the next match, 7–7 wrestlers’ results drop below their predicted percentage.The 7–7 wrestlers do well against both 8–6 and 9–5 opponents.Wrestling matches only last a few seconds and are won by a quick exertion of force.Wrestlers from the same stable do not oppose one another.
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This evidence suggests that wrestlersare exhausted after upset victories and lose the following match.might make deals so one wins one match and the other wins the next.typically get a lucky win when they have a record of 7–7.do not do as well when they are expected to win as when they are expected to lose.
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