(a)Find the least sample size required in a public opinion poll if it asserts with a probability 0.95 that the precision of its estimate of proportion p of the vote for a certain candidate is within 0.03.[Answer is 1068]
(b)Find the least sample size required if it is known that the proportion p is about 0.6.[Answer is 1025]
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Population Parameter
2010-05-23 5:28 am
回答 (1)
2010-05-23 7:44 am
✔ 最佳答案
Please see the following:圖片參考：http://img96.imageshack.us/img96/260/83934104.png
2010-05-22 23:44:27 補充：
http://img96.imageshack.us/img96/260/83934104.png
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