=+38. Parameters, again. Every Normal model is defined by its parameters, the mean and the standard deviation. For each model described here, find the missing parameter.

Don’t forget to draw a picture.

a) m = 1250, 35% below 1200; s = ?

b) m = 0.64, 12% above 0.70; s = ?

c) s = 0.5, 90% above 10.0; m = ?

d) s = 220, 3% below 202; m = ?