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1. According to a national CNN/USA/Gallup survey of 1,025 adults, conducted March 14-16, 2008, 63% say they have experienced a hardship because of rising gasoline prices. How do you believe the survey was conducted and what types of bias could occur in the data collection process?

2. Indicate which sampling method would most likely be used in each of the following situations:

a. an interview conducted with mayors of a sample of cities in Florida

b. a poll of voters regarding a referendum calling for a national value-added tax

c. a survey of customers entering a shopping mall in Minneapolis

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