Normal Distribution, Confidence Interval, Hypothesis Testing - Normal Distribution: Calculating Probabilities/Areas (z-table)

This tutorial shows how to calculate areas/probabilities using the cumulative standard normal tables. 0 to Z tables: https://youtu.be/yVCEZr5dF14 Inverse lookup: https://youtu.be/4iUTZs9EAB8 On Casio Calculator: https://youtu.be/N5PgKAwxcyw 68-95-99.7 Rule: https://youtu.be/lEms9KUkles Steps for calculating areas/probabilities using the cumulative normal distribution table: 1. Translate the score (x) into a z-score: 2. Find the corresponding area from the z-table. 3. i) For less than area/probability, the area in the table is the answer. ii) For greater than area, subtract area in the table from 1. iii) For area between, subtract smaller area from larger area.