For the same question a random sample of 400 kumon students

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Kumon promotes a method of studying mathematics that it claims develops mathematical ability. Do data support this claim? In one particular question on the TIMS exam, a random sample of 400 non-Kumon students resulted in 73 getting the correct answer. For the same question, a random sample of 400 Kumon students resulted in 130 getting the correct answer. Perform the appropriate test to substantiate Kumon's claims. Are there any confounding factors regarding the claim?

Reference no: EM13624157

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