answer the following and illustrate each under the normal curve:

Directions: Answer the following and illustrate each under the normal curve: 1. Compute the probability area to the left of z = -1.25. 2. Compute the probability area above z = 1. 3. Find the probability area between z = -0.25 and z = 1.5. 4. Find the 90th percentile of a normal curve. 5. Compute the upper 5% of the normal curve