Question 1159867
use 2nd VARS 3 invnorm (.83,409,9) to get 417.58, which rounds to 418 gm
17% of the time the weight will be greater than is the 83rd percentile

or 83rd percentile is +0.95 for z
z=(x-mean.sd)=+0.95
x-mean=+8.55
x=417.55 which rounds up to 418 gm. The weight will be greater than 418 gm 17% of the time