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[問題]GWD3-Q4

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[問題]GWD3-Q4

帖子kwtluck » 2006-11-05 11:26

Q4
In a demographic study, the population and total income of a certain region were estimated from other data, and both estimates had lower and upper limits. At the time of the estimates, was the per capita income for the region greater than $16,500?
(1)The lower limit for the estimate of the population was 330,000 people.
(2)The lower limit for the estimate of the total income was $5,500,000,000
Answer:E

題目有點繞,不是很清楚 :|||
請各位大大解說一下 i73
kwtluck
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帖子spreewell » 2006-11-05 16:37

這題是要解平均每人所得是否大於$16,500
要訣在於人數要最多,總收入要最少,此時平均每人所得為最低情形
若此情形滿足平均所得大於$16500,則其餘情形必定滿足。
而(1)與(2)所給的條件並無法給予確定的答案
spreewell
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帖子kwtluck » 2006-11-06 14:05

懂了~~懂了~~ i90
**感謝^無限spreewell大大的詳細解說**
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