Edgar played a quiz game in which he answered 15 questions and got 3 incorrect. At this rate, how many questions should Edgar expect to answer correctly if he answers a total of 405 questions? I need help on this problem it’s almost 11:59

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