In: Statistics and Probability
If a 99% confidence level is used, how many people should be included in the survey if the researchers wanted to have a margin of error of 5%?
How would the sample size change if the researchers wanted to estimate the percentage with a margin of error of 3%?
Solution:
If a 99% confidence level is used, how many people should be included in the survey if the researchers wanted to have a margin of error of 5%?
Where:
is the critical value at the 0.01 significance level.
How would the sample size change if the researchers wanted to estimate the percentage with a margin of error of 3%?
Answer: