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

Graphing Calculator Example

8.5 Small-Sample Test of Hypothesis about a Population Mean

The average undergrad cost for tuition, fees, room and board at two-year colleges 5 years ago was $13,252.  This year a random sample of 20 schools had a mean (adjusted for inflation) of $15,560 and a standard deviation of $3,500.  Use a 1% significance level to test the claim that tuition, fees, and room and board (adjusted for inflation) at two-year colleges has risen over the past 5 years.         

« back