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
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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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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