SAS Certification Prep Guide

Chapter 4: The Normal Distribution and Introduction to Inferential Statistics

Introduction. 89

Continuous Random Variables. 91

Normal Random Variables. 91

The Empirical Rule. 92

The Standard Normal Distribution. 95

Applying the Standard Normal Distribution to Answer Probability Questions. 101

The Sampling Distribution of the Mean. 106

Characteristics of the Sampling Distribution of the Mean. 107

The Central Limit Theorem... 115

Application of the Sampling Distribution of the Mean. 121

Introduction to Hypothesis Testing. 135

Defining the Null and Alternative Hypotheses. 136

Defining and Controlling Errors in Hypothesis Testing. 139

Hypothesis Testing for the Population Mean (σ Known) 142

Two-Tailed Tests for the Population Mean (µ) 142

One-Tailed ...