Question 606768
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
*Note: {{{z = blue(x - mu)/blue(sigma)}}}
  z = (36-38.3)/2.1 = -1.0952
P(z<-1.0952) = .1367  
{{{drawing(400,200,-5,5,-.5,1.5, graph(400,200,-5,5,-.5,1.5, 0,exp(-x^2/2)), blue(line( -1.0952,0, -1.0952,exp(-1.0952^2/2))),locate(4.8,-.01,z),locate(4.8,.2,z))}}}