作者eisenefrau ( 薇魏)
看板NtuDormF2
標題統計學請幫助!一題而以
時間Sun Jan 14 14:31:00 2007
女二同學拜託!明天要考試但是我發現有一題我完全不會算!!!不知道要用哪一個分配
若人知道請寫給我!
題目如下:
Suppose a subdivision on the southwest side of Denver contains 1500 houses. The subdivision was built in 1983. A sample of 100 houses selected randomly and evaluated. Mean appraised value of a house in subdivision for all houses is 177 000 USD, standard deviation is 8,500 USD, waht is the probability that the sample average is greater than 185 000 USD?
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1F：推 HSNUsigma:雖然說看不太懂題意 但是似乎樣本數很大 01/14 20:45
2F：→ HSNUsigma:根據中央極限定理，我覺得是以常態分配來算 01/14 20:45
3F：→ HSNUsigma:僅供參考 期末加油~ 01/14 20:46
4F：推 eisenefrau:3q:-> 01/15 20:00