A group of 1,438 sexually active patients were counseled on condom use and the risk of contracting

Question:

A group of 1,438 sexually active patients were counseled on condom use and the risk of contracting a sexually transmitted disease (STD). After 6 months, 103 of the patients had new STDs.51 Construct a 95% confidence interval for the probability of contracting an STD within 6 months after being part of a counseling program like the one used in this study.