Video example of giving the mean and standard deviation of the standard normal distribution and finding probabilities using the empirical rule. [8:16]

Video example of calculating z-scores and explaining how z-scores apply to non-normal distributions. Also shows example of using empirical rule to calculate probability. Includes link to practice problems. [5:57]

Video reviews the empirical rule (68-95-99.7 rule) and gives examples using it to approximate probabilities. Includes link to practice problems. [10:25]