问题如下图:
选项:
A.
B.
C.
解释:
请问这种题可以用先算de得Z=-2,在-2.58和-1.96之间,所以在99%和95%之间选97.72%。这个思路可以吗
NO.PZ2015120604000097问题如下A funmanager fin ththe return of fun in the market are normally stributehaving a meof $160,000 ana stanrviation of $30,000. The percent of stoinvestors thhave incomes greater th$100,000?A.34.13%.B.68.26%.C.97.72%.C is correct.Z=(100000 - 160000)/30000=F(-2).1- F(-2) = F(2) = 0.9772.需要差的表在哪里找呢
NO.PZ2015120604000097 问题如下 A funmanager fin ththe return of fun in the market are normally stributehaving a meof $160,000 ana stanrviation of $30,000. The percent of stoinvestors thhave incomes greater th$100,000? A.34.13%. B.68.26%. C.97.72%. C is correct.Z=(100000 - 160000)/30000=F(-2).1- F(-2) = F(2) = 0.9772. 讲义里面的正态分布表中最多到1.4几没有2阿?是我没找对表吗?
NO.PZ2015120604000097 问题如下 A funmanager fin ththe return of fun in the market are normally stributehaving a meof $160,000 ana stanrviation of $30,000. The percent of stoinvestors thhave incomes greater th$100,000? A.34.13%. B.68.26%. C.97.72%. C is correct.Z=(100000 - 160000)/30000=F(-2).1- F(-2) = F(2) = 0.9772. 請問如何判斷應該查甚麽表?教學短片内說考試不會考查表,
你好,关于F(-2)=1-2=-1, 查表格的时候不应该是0.8413吗?如果我的思路不对,可以麻烦老师详细一下第二步吗?
请问这个题没提供表,怎么算F(2.0)呢