Mathematics, 19.01.2021 02:00 ortizprecious5183
In a study to find the proportion of children with asthma in a certain population, we desire a 95% confidence interval with standard error no more than 0.05. Without any prior knowledge of the proportion, what should be our minimum sample size
Answers: 3
, and a confidence level of 
, we have the following confidence interval of proportions.
.
, z is the value of Z that has a pvalue of 
, so 
. 
, which is when the largest sample size is needed. We have to find n for which 
. So
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