Example: Find the area between z = -1.55 and z = 1.18

Step 1 (to get to the following screen, press 2nd — DIST):

Step 2:

Step 3 (results):

Example: What z-value cuts off the bottom 5% of the normal curve?

Step 1:

Step 2:

Step 3 (results):

Example: What z-value cuts off the top 7.5% of the normal curve?

Step 1:

Step 2:

. . . or the following, equivalent step:

Step 3 (results):