Find the area under the standard normal curve to the left of z = 1.88, P(z < 1.88). (Give your answer correct to four decimal places.)

Answer 1

Just find 1.88 in your chart or in your table, which you surely must have.
If not, here is an online standard normal curve ....
http://davidmlane.com/hyperstat/z_table.html
click on "below" and enter 1.88
you should get .969946