AndroGel 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.


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


BDetermine a 99% confidence interval for the proportion

of adult males treated with AndroGel 1.62% who will

experience elevated levels of PSA.


CWhat is the impact of increasing the level of confidence on

the margin of error?