According to the Centers for Disease Control and Prevention, 15.5% of the U.S. population smoked in 2016.

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According to the Centers for Disease Control and Prevention, 15.5% of the U.S. population smoked in 2016. In 2018, a random sample of 650 Americans was selected, 79 of whom smoked.

a. Construct a 90% confidence interval to estimate the actual proportion of people who smoked in the United States in 2018.

b. What is the margin of error for this sample?

c. Is there any evidence that this proportion has changed since 2016 based on this sample?

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Business Statistics

ISBN: 9780134685267

3rd Edition

Authors: Robert A. Donnelly

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Question Posted: Nov 05, 2019 04:43 AM

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According to the Centers for Disease Control and Prevention, 15.5% of the U.S. population smoked in 2016.

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a b ME p 164500128 00211 c There is evidence that t...View the full answer

Business Statistics

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