Low levels of testosterone in adult males may be treated using AndroGel 1.62%. In clinical studies of

Question:

Low levels of testosterone in adult males may be treated using AndroGel 1.62%. In clinical studies of 234 adult males who were being treated with AndroGel 1.62%, it was found that 26 saw their prostate-specific antigen (PSA) elevated. The PSA is a protein produced by cells of the prostate gland. Source: www.androgelpro.com/clinical-studies/default.aspx

(a) Determine a 95% confidence interval for the proportion of adult males treated with AndroGel 1.62% who will experience elevated levels of PSA.

(b) Determine a 99% confidence interval for the proportion of adult males treated with AndroGel 1.62% who will experience elevated levels of PSA.