A Gallup survey based on telephone and face-to-faceinterviews with 4,220 adults in China, aged 15 and oldersuggests that 30% smoke regularly or occasionally.The following is also noted "one can say with 95%confidence that the maximum margin of samplingerror is 2.4 percentage points". Which of the followingis true based on the results of this survey?Exactly 30% of all Chinese adults smoke.O We are 95% confident that 27.6 % to 32.4 % of allChinese adults smoke.O If we were to randomly sample another group of4,220 Chinese adults we would find that exactly30% of them smoke as well.O If the sample size was larger, the margin of errorwould be larger as well.O We are 95% confident that 25.2% to 34.8% of allChinese adults smoke.

We have given that Sample size n =4220 Sample proportion p^=30%=0.30 Margin of error =E =2.4%=0.024

Answered: A Gallup survey based on telephone and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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