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A New York Times article reported that a survey conducted in 2014 included 36,000 ​adults, with 3.72​% of them being regular users of​ e-cigarettes. Because​ e-cigarette use is relatively​ new, there is a need to obtain​ today's usage rate. How many adults must be surveyed now if a confidence level of 90​% and a margin of error of 2.5 percentage points are​ wanted? Complete parts​ (a) through​ (c) below. a. Assume that nothing is known about the rate of​ e-cigarette usage among adults. n = ____________ b. Use the results from the 2014 survey. n = ______________

A New York Times article reported that a survey conducted in 2014 included 36,000 ​adults, with 3.72​% of them being regular users of​ e-cigarettes. Because​ e-cigarette use is relatively​ new, there is a need to obtain​ today's usage rate. How many adults must be surveyed now if a confidence level of 90​% and a margin of error of 2.5 percentage points are​ wanted? Complete parts​ (a) through​ (c) below. a. Assume that nothing is known about the rate of​ e-cigarette usage among adults. n = ____________ b. Use the results from the 2014 survey. n = ______________

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4BGP
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A New York Times article reported that a survey conducted in 2014 included 36,000 ​adults, with 3.72​% of them being regular users of​ e-cigarettes. Because​ e-cigarette use is relatively​ new, there is a need to obtain​ today's usage rate. How many adults must be surveyed now if a confidence level of 90​% and a margin of error of 2.5 percentage points are​ wanted? Complete parts​ (a) through​ (c) below.                                 

a. Assume that nothing is known about the rate of​ e-cigarette usage among adults.   n  = ____________                                            b.  Use the results from the 2014 survey.  n = ______________
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