劉同學
2018-05-22 12:45Investor believes that the mean price of houses in the area is greater than $135,000. A random sample of 25 houses in the area has a mean price of $139,750. The population standard deviation is $24,000. At a 1% level of significance, we should: A Reject the null hypothesis. B Fail to reject the null hypothesis. C Neither rejects nor fails to reject the null hypothesis. 這題答案是否錯誤?1%對應的應該是2.58吧?
所屬:CFA Level I 視頻位置 相關試題
來源: 視頻位置 相關試題
1個回答
張瑋杰助教
2018-05-22 16:38
該回答已被題主采納
同學你好,這題的答案是對的,但是解析那是錯的,不應該是1.96的,而且這題有些問題,題目說了是greater than,應該是單尾假設,所以應該是2.33的,可以記住這個點,考試遇到就能判斷了。
