Dr Jordan Operates a Dental Practice with 315 Patients and She

Dr. Jordan operates a dental practice with 315 patients and she would like to estimate the proportion of her patients that have dental insurance from their employers. A random sample of 75 patients found that 30 had insurance coverage. The 90% confidence interval to estimate the proportion of patients with dental insurance is _______.

A) (0.252, 0.548)
B) (0.319, 0.481)
C) (0.276, 0.524)
D) (0.202, 0.598)