A survey is to be carried out to estimate the proportion of all registered voters in...
A survey is to be carried out to estimate the proportion of all registered voters in California who favor legalizing marijuana. How many people should be included in a random sample to estimate the proportion to within 0.05 with 95% confidence?
Homework Answers
| here margin of error E = | 0.050 | |
| for95% CI crtiical Z = | 1.960 | |
| estimated proportion=p= | 0.500 | |
| required sample size n = | p*(1-p)*(z/E)2= | 385.00 |
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