Jung wanted to find out which band was most popular among the high school students. Where should he conduct his survey to get the most unbiased survey.

A=in the school cafeteria
B=at a school dance where band A is playing
C= at the record store where a member of band B is giving autographs
D=at the school next board meetings

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 99% confidence interval estimate of μ, the mean duration of game play. 4028 4316 4816 4650 4036 5010 4833 4331 4307