Moviegoers and ethnicity

The Motion Picture Associa- tion of America studies the ethnicity of moviegoers to understand changes in the demographics of moviegoers over time. Here are the numbers of moviegoers (in millions) classified as to whether they were Hispanic, African-American, or Caucasian for the years 2002 to 2006.

a) Find the marginal distribution Ethnicity of moviegoers.

b) Find the conditional distribution of Ethnicity for the year 2006.

c) Compare the conditional distribution of Ethnicity for all 5 years with a segmented bar graph.

d) Write a brief description of the association between Year and Ethnicity among these respondents.