Solution of problem N3663 probability theory total prob

Solution of problem N3663 probability theory total prob

3663. 30% come from the first machine to the assembly, 25% from the second, 20% from the third, and 25% from the fourth. Among the parts of the first machine, 0.2% is defective, the second is 0.1%, the third is 0.25%, and the fourth is 0.3%. Find the probability that the part received for assembly will be defective.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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