A GfK Roper Worldwide survey asked consumers in five countries

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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