Survey on Attitudes toward Religion Researchers inter-viewed a number of people and recorded the following data. Of all the respondents:
240 think Hollywood is unfriendly toward religion
160 think the media are unfriendly toward religion
181 think scientists are unfriendly toward religion
145 think both Hollywood and the media are
unfriendly toward religion
122 think both scientists and the media are
unfriendly toward religion
80 think exactly two of these groups are
unfriendly toward religion
110 think all three groups are unfriendly toward
religion
219 think none of these three groups is unfriendly
toward religion.
How many respondents:
(a) were surveyed?
(b) think exactly one of these three groups is
unfriendly toward religion?