1025. According to the TV company, it is established th

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1025. According to the TV company, it is established that 10% of the picture tubes fail during the warranty period. What is the likelihood that of the 64 randomly chosen kinescopes will work the warranty period:
a) exactly 60 picture tubes,
b) from 54 to 63 picture tubes?

Additional information

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

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