Answer
1068
Work Step by Step
We are given $E=0.03, c=0.95$ so $Z_{\alpha/2}=1.96$
without knowing the proportion, we use $\hat p=\hat q=0.5$
The number of sample required $n=0.5^2\times(\frac{1.96}{0.03})^2\approx1068$ (round upwards here)
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 7 - Confidence Intervals and Sample - Review Exercises - Section 7-3 - Page 408: 12
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
