Redo Exercise 4 using heart rate as the dependent variable instead of anxiety.

Data from exercise 4

Add the experimental factor (i.e., difficulty of the 11th quiz question) to the analysis in Exercise 1, and compute the mixed-design ANOVA. Request a plot of the cell means, and explain your ANOVA results in terms of the pattern in your graph. Follow the mixed-design ANOVA with separate one-way ANOVAs for each measurement period (i.e., baseline, prequiz, and postquiz).