Statıstıcs I Deneme Sınavı Sorusu #822445

At a local district, there are three d­ifferent pizza restaurants denoted here by A, B, and C. It is known that 40% of all customers give an order from company A, whereas 35% give an order from company B, and 25% give an order from company C. It is also known that 10% of the motorcycles from company A, 20% of the motorcycles from company B, and 5% of the motorcycles from company C need to a checkup before the next pizza delivery. If a motorcycle returned to the company needs a checkup before the next pizza delivery, what is the probability that this motorcycle was owned by company B?


0,58

0,62

0,74

0,81

0,93


Yanıt Açıklaması:

P(A)=0.40  P(U/A)=0.10  P(U/A).P(A)=0.04

P(B)=0.35  P(U/B)=0.20  P(U/B).P(B)=0.07

P(C)=0.25  P(U/C)=0.05  P(U/C).P(C)=0.0125

P(U)= 0,04+0,07+0,0125=0,12

P(B/U)=0,07/0,12=0,58

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