Introduing the concenpt of the sampling distribution of sample means

Simple example of actually constructing a sampling distribution of sample means

A simple normal distribution problem like we did on Monday (Feb 1)

Using normality of the sampling distribution of sample means to calculate probabilities. I made a notational error on the board: should have X-bar minus mu-sub-X-bar in the numerator of z, not mu-sub-X-bar minus mu.

Another example

Again, I made the same notational error on the board in finishing the example.

Using the normal distribution to approximate the binomial distribution for problems where n is relatively large.