Irwin and colleagues (2004) investigated whether attending a monthly group education program enhanced post-menopausal women’s exercise behaviours. The researchers divided participants into three categories based on the number of sessions they attended: fewer than 5 sessions, 5-8 sessions, and 9-12 sessions. Data for 9 women are shown below; the dependent variable is the number of minutes of exercise per week.
Is there evidence that the program was effective in changing exercise behaviour (α = .05)? Show the four steps of hypothesis testing, including all your calculations, and include an ANOVA summary table. If appropriate (i.e., if H0 is rejected), conduct a Tukey HSD test, and make a conclusion about which means are significantly different from each other.
Fewer than 5 sessions 5-8 sessions 9-12 sessions
155 199 230
120 160 184
130 184 195
0 comments