The following 3 questions (010 to 012) are based on th owing information: John h

Question

The following 3 questions (010 to 012) are based on th owing information: John has the phone numbers of many young ladies. Some of these young ladies are blonde and others are brunettes. In addition, John knows that some are single while others have boyfriends. The exact breakdown is as follows: Single Taken Blonde 15 10 12.1 27 18 2 36 Ss Find the following probabilities: 010: What is the probability of selecting someone who is taken, given that they are blonde? Q11: What is the probability of selecting a single brunette? 12 lo. 218 12: What is the probability of selecting someone who is brunette, given that they are taken? ES o.3272

Explanation / Answer

Q12)

Someone is brunette , given that they are taken

P ( brunette, taken) / P(taken)

= ( 18÷55) / ( 28 ÷ 55 ) = 0.6429.

Q10 and Q11 are true.

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