What is the probability that the sample came from vendor a

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A computer monitor manufacturer subcontracts its major parts to four vendors: A, B, C, and D. Past records show that vendors A and C provide 30% of the requirements each, vendor B provides 25%, and vendor D provides 15%.In a random sample of 10 parts, 4 were found to be nonconforming.

It is known that vendors A and C operate at a level of 5% nonconformance rate, while vendors B and D are at 10% and 15%, respectively. What is the probability that the sample came from vendor A? From vendor B? From vendor C?

Reference no: EM131388752

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