Question

Three-circle, red-on-white is one distinctive pattern painted on ceramic vessels of the Anasazi period found at the Wind Mountain archaeological site. At one excavation, a sample of 164 potsherds indicated that 76 were of the three-circle, red-on-white pattern. How many ceramic potsherds must be found and identified if we are to be 95% confident that the sample proportion p̂ of such potsherds is within 5.0% of the population proportion of three-circle, red-on-white patterns found at this excavation site? (Round your answer up to the nearest whole number.)

Answer 1

solution - ſ = 76 164 Ŕ (1-Ê Margin of error = 2012 m =) no 0.053 1.96 (164) 11- 76 164 382.10 Ço) 383 sample size needed -