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
Test anxiety can hinder academic performance, so a researcher wants to compare the effectiveness of three treatments to reduce test anxiety. The procedure is used on 5 different students. Use the resulting data below and a 1% significance level to test the claim that the three different methods reduce anxiety equally.
Anxiety level on a visual-analogue scale
Subject Beta Blocker Valerian Root Meditation
1 2.7 1.3 1
2 3.9 3.6 3.1
3 4.1 4.2 3.9
4 4.3 4.1 4
5 2.9 2.8 2.2