Ghosts. A May 2001 Gallup Poll found that many Americans believe in ghosts and other supernatural phenomena. The poll was based on telephone responses from 1012 randomly selected adults. The table shows the percentages of people who expressed belief in various phenomena:
a) Is it reasonable to conclude that 66% of those polled expressed belief in either ghosts or astrology?
b) Can you tell what percent of people did not believe in any of the phenomena listed? Explain.
c) Make a bar chart to display these results, and label it correctly.