An association studies the ethnicity of moviegoers to understand changes in the demographics of moviegoers over time. The accompanying table displays the numbers of moviegoers? (in millions) classified as? A, B,? C, and Other in a certain region. Also included are the numbers for the general population and the number of tickets sold. Complete parts a and b below.

X Data table Group A Group B Group C Other Total Population 206.1 48.9 36.9 23.1 315 Moviegoers 85.9 26.5 15.1 13.5 141 Tickets 724 337 142 92 1295 Total 1016.0 412.4 194.0 128.6 1751 Print Done