Question: how to do invnorm on ti 83?
Answer: Step 1: Press 2nd VARS 3. This displays InvNorm( on the home screen. Step 2: Type one of the following: 0.05 (for a one tailed test) ...  Step 3: Press the ) button. Step 4: Press Enter. Step 1: Press 2nd VARS 3. ...  Step 2: Type . ...  Step 3: Press the ) button. Your display should read InvNorm(.