How construct a 95% confidence interval estimate for u and write the confidence statement?College students throw an average of 640 pounds of trash each year. To estimate the amount of trash...

How construct a 95% confidence interval estimate for u and write the confidence statement?

College students throw an average of 640 pounds of trash each year. To estimate the amount of trash discarded by the students at the State University, 36 students were randomly selected. The mean of the sample was 559 pounds with a standard deviation of 159 pounds. Construct a 95% confidence interval estimate for u(average amount of trash that college students throw out each year) and write the confidence statement.