MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Use the given data to find the minimum sample size required to estimate the population proportion.
Margin of error:
0.01;
confidence level: 95%; from a prior study,
p
is estimated by the decimal equivalent of
60%.
9,220
8,298
23,050
15,914
Expert Solution
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Step 1
The confidence level is 95%
Therefore, α = 0.05 and α/2=0.025.
The margin of error is 0.01
Here, p= 0.60 and 1–p= 0.40.
Thus, zα/2 =1.96 (using the formula =NORM.INV (0.975, 0,1)).
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