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Find the mean of the number of right-handers in the group

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Question: Still more lefties. Suppose we choose 12 people instead of the 5 chosen in Exercise.

a) Find the mean and standard deviation of the number of right-handers in the group.

b) What's the probability that

i) they're not all right-handed?

ii) there are no more than 10 righties?

iii) there are exactly 6 of each?

iv) the majority is right-handed?

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.

Reference no: EM131648398

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