Suppose that insurance companies did a survey. They randomly surveyed 450 drivers and found that 340 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.) Which distribution should you use for this problem? (Round your answer to four decimal places.) P' ~ N , Explain your choice. The normal distribution should be used because we are interested in proportions and the sample size is large. The Student's t-distribution should be used because we do not know the standard deviation. The binomial distribution should be used because there are two outcomes, buckle up or do not buckle up. The Student's t-distribution should be used because npq 10, which implies a small sample