Annual sales of hammocks in PR are normally distributed with a population standard deviation of 13,000. In a study on the annual sales of hammocks in PR, a sample of 20 hammocks was taken and it was found that on average the level of annual sales was 215,000. Find a 99% Confidence Interval for the median level of PR hammock sales.

Select one: ___[208.1, 216.2] ___[209.1, 218.1] ___[207.5, 222.5] ___[210.2, 219.8]