In a survey of 60 people it is found that 25 like to drink milk, 26 coffee and 26 tea, 11 like milk and coffee, 8 like coffee and tea and 8 like none of the three. Using Venn diagram i. Find the number of people who like all the three drinks ii. Find the number of people who like exactly one of the three drinks​

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