Find the area under the standard normal distribution curve t

Find the area under the standard normal distribution curve to the left of z = 1.20. Refer to the table of values Area Under the Standard Normal Distribution as needed. The area to the left of z = 1.20 is .

Solution

Area to the left of z=1.2 is probability of z<1.2

P(z<1.2)=0.5+P(0<z<1.2)

=0.5+A(1.2)-A(0)

=0.5+0.3849-0

=0.8849