This tutorial discusses Confidence Intervals. Several examples showing how to calculate confidence intervals are shown.

This tutorial discusses the Normal Distribution and z Scores. Several examples of calculating probabilities using z-scores are shown.

This tutorial discusses Applications of the Normal Distribution. Characteristics of the normal distribution including percentages of the population between standard deviation multiples above and below the mean are discussed.

This tutorial discusses the Normal Approximations to Discrete Random Variables. Several examples of calculating probabilities approximating both the binomial and hypergeometric random variables are shown.