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A Cell Phone Provider Surveyed Four Hundred Customers About Sat-

Question 48

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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.

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(a) .029 , .091. (b) We have no way of k...

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