Unformatted text preview: If mean is less than 70 (it probably is) then area would be slightly smaller, so even closer to 68%. 15 each way would only get about 52%, 25 each way would get about 77.5%, so these don’t work as well. 68% is from the normal curve, so not exact, but should be fairly close for this histogram, which isn’t terribly skewed. 2. (a) 40,000 (b) 56,000 (c) ssq for AC&C: 1,690,000,000,000 and ssq at Bear: 250,000,000,000 ssq at Cong: 1,940,000,000,000 answer: 27,276 3. (a) (175155)/25 = 0.8; about 21.2 % (b) z=0.2; 150 pounds...
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 Fall '08
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 Statistics, Normal Distribution, Standard Deviation, Interval Percent Height

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