Question 934918
mean = 110 oz,  SD = 15 ounces, {{{z = blue(x - 110)/blue(15)}}} 
....
P( x > 120) = P( z > 10/15) = normalcdf( 2/3, 100)  = .2525
P(95 < x < 125) = P( -15/15 <  z < 15/15) = normaldcdf(-1,1)= .6827
...
 What birth weight value separates the lowest 2.5% of infants from the rest? 
z = invNorm(.025) = -1.96
....
(15)(-1.96) + 110 = x = 80.6 oz
round as directed