A Cell Phone Provider Surveyed Four Hundred Customers About Sat-

Essay

A cell phone provider surveyed four hundred customers about sat- isfaction with their student service plan. The number that replied unsatisfactory, X, was recorded. The summary statistics are n = 400 x = 24. Let p =population proportion.
(a) Obtain a 99 % confidence interval for p.
(b) Does your 99 % confidence interval cover p. Explain.
(c) When a large number of these 99 % intervals are calculated from different samples, explain the reason you are 99% confi- dent that any particular one of them covers p.