A GfK Roper Worldwide survey 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 Don't Agree nor Know/No Agree Disagree Disagree Response Total 661 368 452 1513 13–19 32 20-29 816 365 336 16 1533 1525 30–39 871 355 290 9 40–49 914 335 266 6 1521 50+ 966 339 283 10 1598 Total 4228 1762 1627 73 7690 Age