In a clinical trial, patients with mild cases of COVID-19 are randomly assigned to either a placebo or a standard anti-malaria drug. The number of patients who develop heart arrhythmias are tabulated...

In a clinical trial, patients with mild cases of COVID-19 are randomly assigned to either a placebo or a standard anti-malaria drug. The number of patients who develop heart arrhythmias are tabulated in Table 13.11, subdivided by age group.

(a) Plot the ln(odds) of developing an arrhythmia in the same style as a cell-mean plot for a two-way ANOVA.

(b) Use a logistic model to analyze this data, interpreting all the significant effects.