You're about to get on a plane to seattle. you want to know if you should bring an umbrella. you call 3 random friends of yours who live there and ask each independently if it's raining. each of your friends has a 2/3 chance of telling you the truth and a 1/3 chance of messing with you by lying. all 3 friends tell you that 'yes' it is raining. what is the probability that it's actually raining in seattle?