Question 904979
Stick with what You know: {{{sigma = sqrt(5)}}}
{{{z = blue(x - mu)/blue(sigma)}}}
I. P(X<35) = P(z < {{{(35-25)/sqrt(5)}}}= P(z< 4.472) Z SO FAR TO RIGHT, GREEN LINE DOES NOT SHOW
II.P(X>30)= P(z > {{{(30-25)/sqrt(5)}}} = P(z > 2.236)
{{{drawing(400,200,-5,5,-.5,1.5, graph(400,200,-5,5,-.5,1.5, exp(-x^2/2)), green(line(4.472,0,4.472,exp(-4.472^2/2)),line( 2.236,0,2.236,exp(-2.236^2/2))),locate(4.8,-.01,z),locate(4.8,.2,z))}}}