Smoking by students and parents Here are data from a survey conducted at eight high schools on smoking among students and their parents:17 Neither parent smokes One parent smokes Both parents smoke Student does not smoke 1168 1823 1380 Student smokes 188 416 400

(a) How many students are described in the two-way table? What percent of these students smoke?

(b) Give the marginal distribution (in percents) of parents’

smoking behavior, both in counts and in percents.