How easy is it to contact a person in Sacramento, California? If you dont know the telephone
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How easy is it to contact a person in Sacramento, California? If you don’t know the telephone number, it could be difficult. The data from Survey Sampling of Fairfield, Connecticut, reported in American Demographics, show that 68% of the telephone-owning households in Sacramento have unlisted numbers. For a random sample of 150 Sacramento households with telephones, what is the probability that
(a) 100 or more have unlisted numbers?
(b) Fewer than 100 have unlisted numbers?
(c) Between 50 and 65 (including 50 and 65) have listed numbers?
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Related Book For 
Understandable Statistics Concepts And Methods
ISBN: 9780618986927
9th Edition
Authors: Charles Henry Brase, Corrinne Pellillo Brase
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