An author conducts a survey of percentage of Americans who make online purchases. A prior survey shows 80% of American adults make online purchases. If he wants an error rate of at least 3% of a 95% confidence interval, how many subjects minimum will he have to survey to achieve this error rate?

Answer rating: 100% (QA)

To calculate the minimum sample size required to achieve a 3 margin of error with 95 co... View the full answer