SOLUTION: In a lecture class of 100 students, 12 are left handed. If two students are chosen at random, what is the probability that: a) Both are left-handed b) Neither are left-handed

Question 1200636: In a lecture class of 100 students, 12 are left handed. If two students are chosen at random, what is the probability that:
a) Both are left-handed
b) Neither are left-handed
c) Extend your probability tree diagram to show the possible outcomes if three students are chosen.

Answer by ikleyn(52878) (Show Source): You can put this solution on YOUR website!
.

Probably, the shortest way to answer questions (a) and (b) is THIS

(a)  P =  =  =  =  =  = 0.1333  (rounded).    ANSWER



(b)  P =  =  =  =  =  =  =  = 0.7733  (rounded).    ANSWER

Solved.

These formulas do not require explanations: they are SELF-EXPLANATORY and speak for themselves.

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