A balloon is rising vertically from a point on the ground that is 60 ftfrom a ground-level observer. If the balloon is rising at a rate of 24ft/sec, how fast is the angle of elevation between the observer and the balloon increasing when

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