作者eisenefrau ( 薇魏)
看板NtuDormF2
标题统计学请帮助!一题而以
时间Sun Jan 14 14:31:00 2007
女二同学拜托!明天要考试但是我发现有一题我完全不会算!!!不知道要用哪一个分配
若人知道请写给我!
题目如下:
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:虽然说看不太懂题意 但是似乎样本数很大 01/14 20:45
2F：→ HSNUsigma:根据中央极限定理，我觉得是以常态分配来算 01/14 20:45
3F：→ HSNUsigma:仅供参考 期末加油~ 01/14 20:46
4F：推 eisenefrau:3q:-> 01/15 20:00