13. A New York Times article reported that a survey conducted in 2014 included 36,000 adults, with 3.65% 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 95% and a margin of error of 1 percentage point are wanted? Complete parts (a) through (c) below. a. Assume that nothing is known about the rate of e-cigarette usage among adults. n= (Round up to the nearest integer.) b. Use the results from the 2014 survey. n= (Round up to the nearest integer.) c. Does the use of the result from the 2014 survey have much of an effect on the sample size? O A. No, using the result from the 2014 survey does not change the sample size. O B. Yes, using the result from the 2014 survey only slightly increases the sample size. O C. No, using the result from the 2014 survey only slightly reduces the sample size. O D. Yes, using the result from the 2014 survey dramatically reduces the sample size.
13. A New York Times article reported that a survey conducted in 2014 included 36,000 adults, with 3.65% 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 95% and a margin of error of 1 percentage point are wanted? Complete parts (a) through (c) below. a. Assume that nothing is known about the rate of e-cigarette usage among adults. n= (Round up to the nearest integer.) b. Use the results from the 2014 survey. n= (Round up to the nearest integer.) c. Does the use of the result from the 2014 survey have much of an effect on the sample size? O A. No, using the result from the 2014 survey does not change the sample size. O B. Yes, using the result from the 2014 survey only slightly increases the sample size. O C. No, using the result from the 2014 survey only slightly reduces the sample size. O D. Yes, using the result from the 2014 survey dramatically reduces the sample size.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 24PPS
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Transcribed Image Text:13. A New York Times article reported that a survey conducted in 2014 included 36,000 adults, with
3.65% 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 95% and a margin of error of 1 percentage point are wanted? Complete parts
(a) through (c) below.
a. Assume that nothing is known about the rate of e-cigarette usage among adults.
n =
(Round up to the nearest integer.)
b. Use the results from the 2014 survey.
n=
(Round up to the nearest integer.)
c. Does the use of the result from the 2014 survey have much of an effect on the sample size?
O A. No, using the result from the 2014 survey does not change the sample size.
O B. Yes, using the result from the 2014 survey only slightly increases the sample size.
OC. No, using the result from the 2014 survey only slightly reduces the sample size.
O D. Yes, using the result from the 2014 survey dramatically reduces the sample size.
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