Class - boys and girls

In the class are 60% boys and 40% girls. Long hair has 10% boys and 80% girls.

a) What is the probability that a randomly chosen person has long hair?
b) The selected person has long hair. What is the probability that it is a girl?

Result

p1 =  0.38
p2 =  0.842

Solution:

Solution in text p__1 =
Solution in text p__2 =







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To solve this example are needed these knowledge from mathematics:

Would you like to compute count of combinations?

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