Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 300 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up.
NOTE: If you are using a Student’s t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)
State the confidence interval. (Round your answers to four decimal places.)
(______ , ______)
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