Solution of problem N4105 probability theory total prob

Solution of problem N4105 probability theory total prob

4105. Of the 500 lamps, 300 belong to the first batch, the rest to the second. In the first batch of 4%, and in the second 3% of defective lamps. One lamp is selected at random. Determine the probability that the selected lamp is defective.

Additional information:

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

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