Enjoy learning Statistics Online! Please be sure to share and subscribe to our YouTube channel.

**ASK THE PROFESSOR FORUM**

Course Documents

Chapter 1 - Intro

Chapter 2 - Methods for Describing Sets of Data

Chapter 3 - Probability

Chapter 4 - Discrete Random Variables

Chapter 5 - Normal Random Variables

Chapter 6 - Sampling Distributions

Chapter 7 - Confidence Intervals

Chapter 8 - Tests of Hypothesis: One Sample

Chapter 9 - Confidence Intervals and Hypothesis Tests: Two Samples

Sample Exam I: Chapters 1 & 2

Sample Exam II: Chapters 3 & 4

Sample Exam III: Chapters 5 & 6

Sample Exam IV: Chapters 7 & 8

Lecture Examples

Example 131: The U.S. Department of Education conducts an assessment of student learning called the National Assessment of Educational Progress (NAEP). From the 2009, grade 8 mathematics assessment random samples were drawn from two groups: Hispanic males from large cities and Black males from large cities. The data is summarized below. Use the data to form a 95% confidence interval for the true mean difference for grade 8, mathematics scores between Hispanic males and Black males from large cities.