According to the Centers of Disease Control and Prevention, 44% of U.S. households still had landline phone
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According to the Centers of Disease Control and Prevention, 44% of U.S. households still had landline phone service. Suppose a random sample of 60 U.S. households is taken.
a. Find the probability that exactly 25 of the households sampled still have a landline.
b. Find the probability that more than 25 households still have a landline.
c. Find the probability that at least 25 households still have a landline.
d. Find the probability that between 20 and 25 households still have a landline.
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Related Book For
Introductory Statistics Exploring The World Through Data
ISBN: 9780135163146
3rd Edition
Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan
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