Let the variable Z stand for a standard normally-distributed variable. Find these probabilities.

a. P ( z < 1.76 )

b. P ( -2.05 < Z < .66 )

C. P ( Z > -1.62 )

Then, Find the Z values that satisfy the following conditions (separately)

a. 87.29% of the area under the distribution curve is to the left of it

b. 67.72% of the area under the distribution curve lies to the right of it