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Question
Suppose one person is selected at random from a group of 100 persons are given in the following
| Title | Psychologist | Socialist | Democrat | Total |
| Men | 15 | 25 | 10 | 50 |
| Women | 20 | 15 | 15 | 50 |
| Total | 35 | 40 | 25 | 100 |
What is the probability that the man selected is a Psychologist?
Sum
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Solution
Total number of men = 50
Number of men psychologist = 15
The probability of selecting a psychologist given that a man has been already selected is `15/50 = 3/10`
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