Answer
3/5 or 0.6
Work Step by Step
The question asks you to find the probability that a randomly selected student in the survey is from a middle income family or a high income family.
These events are mutually exclusive because it is impossible for A and B to occur simultaneously.
P(middle income family or high income family)= P(middle income family)+(high income family)
P(middle income family or high income family)= 160/350 + 50/350
P(middle income family or high income family)= 3/5 or 0.6
