Question 393144
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Hi
{{{z = blue(X - mu)/blue(sigma)= blue(X - 19)/blue(8) }}}
 z = -.3853 for the 35 percentile using excel function NORMSINV(0.35)
 -.3853*8 = X - 19
 19 - .3853*8 = X
      15.9176 = X