Hey, part of a promotion students who participate in a survey or mailed a free pass for one of three activities, movies rollerskating on the way participants have an equal chance of receiving each type of fast if 900 students participate how many would be expected to receive a pass for rollerskating
There are three activities: survey, movie, and rollerskating. Each of these activities has an equal chance of being chosen, so the probability of receiving a pass for rollerskating is 1/3.
If 900 students participate, the expected number of students who would receive a pass for rollerskating can be calculated as:
Expected number = total number of students participating × probability of receiving a pass for rollerskating
Expected number = 900 × 1/3
Expected number = 300
Therefore, it can be expected that 300 students would receive a pass for rollerskating.