Problem 2

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