Two Hospitals Share Responsibility for a Very Poor Area of a Major

Multiple Choice

Two hospitals share responsibility for a very poor area of a major city.Both are required to treat patients regardless of their ability to pay.Hospital 1 claims that its emergency room (ER) treats a higher percentage of nonpaying patients than does hospital 2.In a random sample of 200 ER cases from hospital 1, 122 were unable to pay.An independent sample of 180 ER cases from hospital 2 has 108 that were unable to pay.Construct a 99% confidence interval for the population difference in the proportions of nonpaying patients.

A) (-0.1194, -0.1394)
B) (-0.1068, -0.1268)
C) (-0.0884, 0.1084)
D) (-0.1553, 0.1753)