Ronnie, Bobby, and Mike are singers from the group New Edition. They are raising money for studio time. Ronnie raised $30 more than Mike, and Bobby raised $12 less than Ronnie. They collected $432 in total. How much did Ronnie collect? *

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