Loi normale centrée réduite

Standard normal distribution

P ( x < 0,31 ) = 0.62172

P(-2.96 < x < 0.25 ) = 0.59871 - ( 1 - 0.99846 ) = 0.59871 - 0.00154 = 0.59717 = 0.597(17)

French translation:

Hello,   Suppose our random variable X has a standard normal distribution .   0.6217 = P ( X <0 , xx ( two significant figures) ) 0 , yyy = P ( -2.96 <X < 0.25) ( three significant figures) .

Thank you