Question 1193433
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Over 1,000 people try to climb Mt. Everest every year. Of those who try to climb Everest, 31 percent succeed. 
The probability that a climber is at least 60 years old is 0.04. 
The probability that a climber is at least 60 years old and succeeds in climbing Everest is 0.005.
Find the probability of success, given that a climber is at least 60 years old.
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<pre>
In this conditional probability problem,


    P(success, given that a climber is at least 60 years old) = 


  = {{{P(climber_is_at_least_60_years_old_and_succeeds_in_climbing_Everest)/P(a_climber_is_at_least_60_years_old)}}} = {{{0.005/0.04}}} = 0.125.    <U>ANSWER</U>
</pre>

Solved.