Three-circle, red-on-white is one distinctive pattern painted on ceramic vessels of the Anasazi period found at an archaeological site. At one excavation, a sample of 175 potsherds indicated that 78 were of the three-circle, red-on-white pattern.

A. Find a point estimate p for the proportion of all ceramic potsherds at this site that are of the three-circle, red-on-white pattern.

B. Compute a 95 percent confidence interval for the population proportion p of all ceramic potsherds with this distinctive pattern found at the site.