Twelve different video games showing substance use were observed and the duration times of game play(in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the data to construct a 95

95% confidence interval estimate of mu

, the mean duration of game play.

4051

3893

3869

4033

4322

4823

4650

4041

5009

4815

4324

4315