NO.PZ2015120604000094
问题如下:
Considering Z refers an random varible of the standard normal distribution, P(0≤Z≤1.65) is equal to ?
选项:
A. 0.47.
B. 0.46.
C. 0.45.
解释:
C is correct.
From the standard normal distribution table, F(1.65) = 0.95. So P(0≤Z≤1.65) = F(1.65)-F(0) = 0.95-0.5 = 0.45.
如题。90%减去0左边的0.5,应该得出的是40%?