Still more lefties
Suppose we choose 12 people instead of the 5 chosen in given Exercise.
a) Find the mean and standard deviation of the number of right-handers in the group.
b) What's the probability that they're not all righthanded?
c) What's the probability that there are no more than 10 righties?
d) What's the probability that there are exactly 6 of each?
e) What's the probability that the majority is righthanded?
Exercise :
Lefties. Assume that 13% of people are left-handed. If we select 5 people at random, find the probability of each outcome described below.
a) The first lefty is the fifth person chosen.
b) There are some lefties among the 5 people.
c) The first lefty is the second or third person.
d) There are exactly 3 lefties in the group.
e) There are at least 3 lefties in the group.
f) There are no more than 3 lefties in the group.