16. A multiple-choice test question is considered easy if at least 80% of the responses are correct. A sample of 6503 responses to one question indicates that 5463 of those responses were correct. a) What is the best point estimate for the true proportion of correct answers? (2) b) What is the margin of error of the estimate of p with 99% confidence? (5) c) Construct the 99% confidence interval for the true proportion of correct responses. (2) d) Is it really likely that this question is really easy? Why, or why not? (3)