International food survey. A GfK Roper Worldwide survey in 2005 asked consumers in five countries whether they agreed with the statement “I am worried about the safety of the food I eat.” Here are the responses classified by the age of the respondent.

If we select a person at random from this sample:

a) What is the probability that the person agreed with the statement?

b) What is the probability that the person is younger than 50 years old?

c) What is the probability that the person is younger than 50 and agrees with the statement?

d) What is the probability that the person is younger than 50 or agrees with the statement?

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Neither Agree Don't Know/ nor No Agree Disagree Disagree Response Total 13-19 661 368 452 32 1513 20-29 816 365 336 16 1533 30-39 871 355 290 9 1525 40-49 914 335 266 6 1521 50+ 966 339 283 10 1598 Total 4228 1762 1627 73 7690