Hey, i need some help with these two probability questions
1)Jeanie is a bit forgetful and if she doesn't make a "to do" list the probability that she forgets some thing is supposed to do is .1. Tomorrow she intends to run three errands and she fails to write them on her hand.
c)what is the probability jeanie remembers at least one of the three errands?
2)In a small city approx 15% of those eligible are called for jury duty in any one calendar year. People are selected at random from those eligible. The same individual cannot be called more than once in the same year. What is the probability that an eligible person in this city is selected 2 years? 3 years?
not sure if the second one is a binomial probability distribution
The Attempt at a Solution
For the first question i did:
P(Jeanie remembers first errand but not second or third)
P(jeanie remembers first) X P(jeanie forgets second) x P(jeanie forgets third)
(1-0.1)(0.1)(0.1)= 0.009 I got that, but i'm not too sure if i did it right just hoping someone could double check.
For the second question i really actually don't know how to set this up, so i haven't had much luck.