STATISTICS I (İSTATİSTİK) - (İNGİLİZCE) Dersi Basics of Probability soru detayı:

PAYLAŞ:

SORU:
There are 20 balls in a bag of whom 5 are blue, 8 are red and 7 are pink. One picks a ball from the bag, and he says that it is not pink. What is the probability that it is blue?

CEVAP:
The probability of not being pink=13/20

The probability of being blue=5/20

Then probability of being blue, given not being pink=(5/20)/(13/20)=5/13

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