The line plot shows the thickness of metal sheets in inventory at a local body shop. A mechanic can use sheet metal with a thickness between 0.155 and 0.235 inches to
perform a repair
How many metal sheets in the inventory are available for the mechanic's repair needs?

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