Homework Soursein a Gallup poll conducted October 2010 44 of the people ans
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
Solution
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
