When David arrived in the country of Georgia, he exchanged \$165$165dollar sign, 165 of United States (US) currency for 385385385 Georgian Laris. When he is ready to return to the US, he has 147147147 Laris left. Assuming the exchange rate is the same, how many US dollars is that worth?

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