Every Normal model is defined by its pa- rameters, the mean and the standard deviation. For each
model described below, find the missing parameter. As
always, start by drawing a picture.
a) u = 20, 45% above 30; o = ?
b) u = 88,2% below 50; o = ?
c) o = 5, 80% below 100; j = ?
d) o = 15.6, 10% above 17.2; p = ?