Apediatrician speculated that frequency of visits to her office may be influenced by type of medical insurance coverage. she randomly selects 15 patients with different types of insurance coverage. use the table to you calculate an anova (and its various elements) to determine if frequency of visits varies by insurance coverage. note: all the necessary formulas are given in the individual s that follow. a guide for the symbols is provided below: equation = grand mean n= total number of cases nk = number of cases per group equation = group mean k = number of groups msb = mean square between msw = mean square within