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2 weeks ago
Dimes minted in the United States average 2.286 g with a standard deviation of 0.06 g. A couple chemistry students were trying out their teacher’s new scale by weighing a bunch of coins. The found a nickel that weighed 5.19 g and a dime that weighed 2.45 g. Which coin was more exceptionally heavy? Explain.
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Stats: Modeling the World


Edition: 4th
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2 weeks ago
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The dime is more unusual. The nickel weighed a bit more than 2 standard deviations above the average weight (z = 2.375, while the dime was closer to 3 standard deviations more than the average for dimes (z = 2.733).
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