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

Example 151 part B

Example 151:  In the following study, three kinds of fertilizer were compared.  The researchers applied each fertilizer to five orchids.  Each of the fifteen orchids was randomly assigned to one of the three fertilizers.  At the end of the one year, the heights (in ft) of the plants were recorded.  Test the claim at the 1% significance level that at least one of the three fertilizers has a different effect on orchid height.

A

B

C

1.2

1.3

1.5

1.4

1.2

1.5

1.3

1.1

1.6

1.3

1.0

1.7

1.5

0.9

1.6

 

« back