Solution of problem N3989 probability theory total prob

Solution of problem N3989 probability theory total prob

3989. The store has televisions with imported and domestic CRT in the ratio of 8: 2. The probability of failure during the warranty period of the TV with an imported kinescope is 0.008, with domestic - 0.01. Find the probability that the TV purchased in the store will withstand the warranty period.

Additional information:

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

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