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Sample standard deviation on economics examination

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The sample mean and sample standard deviation on your economics examination were 60 and 20 respectively; the sample mean and samplestandard deviation on your statistics examination were 55 and 10,respectively. You scored 70 on the economics exam and 62 on thestatistics exam. Assuming that the two histograms of test scoresare approximately normal histograms, (a)on which exam was yourpercentile score highest?, (b) approximate the percentage of thescores on the economics exam that were below your score. (c)approximate the percentage of the scores on the statistics examthat were below your score.

Reference no: EM131185826

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