Question:

A recent survey of 18 randomly selected social networking

Last updated: 8/11/2022

A recent survey of 18 randomly selected social networking

A recent survey of 18 randomly selected social networking sites has a mean of 11.5 million visitors for a specific month. The standard deviation is 4.58 million. Find the lower bound limit of the 99% confidence interval of the true mean. Round your answer to 3 decimal places.