SOLUTION: A random sample of 250 adults found that 67% of them access the internet at work, 82% of them access the internet at home, and 60% access the internet both at home and work. What

Algebra ->  Probability-and-statistics -> SOLUTION: A random sample of 250 adults found that 67% of them access the internet at work, 82% of them access the internet at home, and 60% access the internet both at home and work. What       Log On


   



Question 1141166: A random sample of 250 adults found that 67% of them access the internet at work, 82% of them access the internet at home, and 60% access the internet both at home and work. What is the probability that a randomly selected adult will access the internet at home or work?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
P(OR) is P(1)+P(2)-P(1 and 2), the last double counting.
=67+82-60=89% one or the other