Question 4 6 pts A medical researcher is interested in knowing what percentage of the U.S. population has a certain gene. The researcher collect a random sample of 498 people from across the country, and tests them for the gene. The gene was present in 81 of the 498 people tested. a) Find a 90% confidence interval for the true proportion of people in the U.S. with the gene." b) Provide the right endpoint of the interval as your answer. Round your answer to 4 decimal places