In a survey of 3611 adult Americans 18 years and older conducted in July 2010 by Smart

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In a survey of 3611 adult Americans 18 years and older conducted in July 2010 by Smart Revenue, it was found that 542 have used their smartphone to make a purchase.

(a) Obtain a point estimate for the population proportion of adult Americans 18 years and older who have used their smartphone to make a purchase.

(b) Verify that the requirements for constructing a conﬁdence interval about p are satisﬁed.

(c) Construct a 90% conﬁdence interval for the population proportion of adult Americans who have used their smartphone to make a purchase.

(d) Interpret the interval.

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Fundamentals Of Statistics

ISBN: 9780321844606

4th Edition

Authors: Michael Sullivan III

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Question Posted: Apr 28, 2015 12:21 AM

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In a survey of 3611 adult Americans 18 years and older conducted in July 2010 by Smart

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a p x n 5423611 0150 b The sample size n 3611 is less than 5 of the population and n p 1p 4...View the full answer

Fundamentals Of Statistics

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