Tom and jerry each has some money. if tom spends $90/day and jerry
spends
$45/day, tom will have $1100 left when jerry has spent all his
money. if tom
spends $45/day and jerry spends $90/day, tom will have $1700 left
when jerry
has spent all his money. how much did jerry have?

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