How do you find the margin of error for the 95% confidence interval used to estimate the following population proportion: "In a clinical test with 2440 subjects, 70% showed improvement from the treatment."?

Related questions

• What does a 95% confidence interval versus a 99% confidence interval tell you?
• Why is a 90% confidence interval narrower than a 95% confidence interval?
• What happens to the confidence interval if you increase the confidence level?
• If a data set of n=115 has a mean of 9.74 and a population standard deviation of 2.93, what is...
• How do confidence intervals change with standard deviations?
• What does the confidence interval of a sample tell you?
• How do confidence intervals change with sample size?
• What is the difference between the confidence interval and margin of error?
• How does confidence interval change with sample size?
• What does a 95% versus a 99% confidence interval mean for a given estimate?