Page 9 of 16 ZOOM + legalizing recreational use of cannabis. Show all work and round the endpoints of the confidence interval to three decimal places. 15. Using data from the same sample, a 90% and a 99% confidence interval were computed for the population mean body mass index (BMI) for adolescent boys. The lower endpoint of the 90% confidence interval was 16.09 and the point estimate used in the 90% confidence interval was 18.77. In the 99% confidence interval, what is the upper endpoint? Show all work and round your answer to two decimal places. 9