Mathematics, 08.12.2020 17:00 Arealbot
The researcher decided to use a 95% confidence interval with a maximum error of 0.05 to estimate p, the proportion of old factory sites in the U. S. where toxic clean-up will be required before the sites can be reused. How large a sample does she need?
Answers: 1
 
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![n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )](/tpl/images/0960/7927/c7923.png)
![n = [\frac{1.96 }{0.05} ]^2 * 0.5 (1 - 0.5 )](/tpl/images/0960/7927/c615d.png)
    
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The researcher decided to use a 95% confidence interval with a maximum error of 0.05 to estimate p,...
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