A Market Researcher selects a simple random sample n 100 twi

A Market Researcher selects, a simple random, sample n= 100 twitter users from a population of over 100 Million Twitter registered users. After Analyzing, the sample, she states that she has 95% confidence that the mean time spent on the site per day, is between 15 and 57 minutes. Explain the meaning of the statement?

This is all they are asking, the answer must be dervived from this question, there are no other supporting information other then this.

Solution

We are 95% confident that the for any set of user samples the mean always lies in the interval 15 and 57. Confidence interval helps to under estimate the mean level across for any set in population