During each summer, many families spent part of their vacation time at a beach along the East or West Coast. Due to the popularity of movies like Jaws, and recent shark attacks at US beaches, Americans have become increasingly concerned about water activities. Research suggests that 70% of all Americans believe that sharks are dangerous (Source: National Aquarium in Baltimore). One thousand Americans were selected, and each was asked whether they believed shark attacks are dangerous.
a) What is the population of interest?
b) What is the sample?
c) Describe the variable of interest.