Chapter 4

Sampling Distributions and Hypothesis Testing

Statistics is arguing

Sampling Distributions

Hypothesis Testing

The beginnings of an example

A Touch of Philosophy

Using the Normal Distribution to Test Hypotheses

Finishing the example

ch4-6 = 30.77     Critical = 55 
ch4-7 = 4.43     (ch4-8 = 19.58) 

ch4-9 ch4-10 ch4-11

Making decisions given probabilities

The Real Answer -

or Type I and Type II errors

Type I Error

Type II Error

The "Conventional" Answer

One versus Two Tailed Tests

Other Sampling Distributions