Refer to the sample data for pre-employment drug screening shown below. if one of the subjects is randomly selected, what is the probability that the test result is a false positive? who would suffer from a false positive result? why?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?