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% confidence interval estimate of mu, the mean duration of game play.

How do I use technology to find the standard deviation of the following? There has to be an easier way than squaring all of these then dividing it

4053

3889

3857

4018

4328

4820

4665

4033

5003

4830

4333

4322