Question

Find the area of the shaded region. The graph depicts the IQ score of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15.
The shaded region numbers are 85-120

Answer 1

enter your data here.

http://davidmlane.com/hyperstat/z_table.html

It's a great Z table site.

Answer 2

0.7937

Answer 3

6cm ×5cm