in a Gallup poll conducted October 2010, 44% of the people answered more strict

Question

in a Gallup poll conducted October 2010, 44% of the people answered more strict to the following question; do you feel that the laws covering the sale of firearms should be make more strict, less strict, or kept as they are now? suppose the margin of error in the poll was 3.5% and the estimate was made with 95% confidence at least how many people were surveyed in a Gallup poll conducted October 2010, 44% of the people answered more strict to the following question; do you feel that the laws covering the sale of firearms should be make more strict, less strict, or kept as they are now? suppose the margin of error in the poll was 3.5% and the estimate was made with 95% confidence at least how many people were surveyed

Explanation / Answer

P=0.44

For 95%, z=1.96

d=0.035

Sample size = (z2*p*(1-p))/d2

= (1.962*0.44*0.0.56)/0.0352

=772.71

The sample size required= 773

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