> pnorm(1.025)
[1] 0.8473184
> pnorm(0)
[1] 0.5
> qnorm(0.8473184)
[1] 1.025
> qnorm(0.5)
[1] 0

confident<-0.99
> LeftTail<-1-confident
> qnorm(1-confident)
[1] -2.326348
> qnorm(LeftTail)
[1] -2.326348