On the NBC Nightly News on Thursday, May 25, 1995, Tom Brokaw read a brief report on computer use in the United States. The story compared computer users by ethnic background, and Brokaw reported that 14%
of blacks and 13% of Hispanics use computers, but 27% of whites use computers. Brokaw then commented that computer use by whites was equal to that of blacks and Hispanics combined.

a. Draw a Venn diagram showing the white, black, Hispanic, Asian, and Native American populations of the United States, along with U.S. computer users.

b. Use the Venn diagram from part to show that percentages cannot be added as was done by Brokaw.