Question

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 90​% confidence interval estimate of μ​, the mean duration of game play

4042

3892

3858

4019

4323

4819

4651

4024

4998

4828

4329

4319

What is the confidence interval estimate of the population mean μ​?

_ < μ < _

Answer 1

Using Ti-83 plus calculator we get, the 90​% confidence interval estimate of μ​, the mean duration of game play is,

4136.7 < μ < 4547.0

Note: if you want confidence interval is to nearest whole number then, 4137 < μ < 4547