QUESTION 18A researcher wants to estimate mean commuting distance within plus or minus two miles with 90% confidence. A small pilot study shows the standarddeviation to be 6 miles. How large should the sample size be?O 24O 12О 3648оооо

Answered: Image /qna-images/answer/b91071aa-7a0e-4fb0-aed3-110708c40e3b.jpg

Answered: QUESTION 18 A researcher wants to…

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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QUESTION 18 A researcher wants to estimate mean commuting distance within plus or minus two miles with 90% confidence. A small pilot study shows the standard deviation to be 6 miles. How large should the sample size be? O 24 O 12 O 36 O 48