Is there evidence of difference in method effectiveness

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Reference no: EM131381083

Recently, Venezuela instituted a new accounting method for its oil revenues.

Suppose that a random sample of 100 accounting transactions using the old method reveals 18 in error, and a random sample of 100 accounts using the new method reveals 6 errors. Is there evidence of difference in method effectiveness? Explain.

Reference no: EM131381083

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