SOLUTION: One day you buy a TV and a DVD player. Televisions have a 20% chance of failing before five years and DVD players have 10%chance of failing before five years. Failures between TV's

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Question 975620: One day you buy a TV and a DVD player. Televisions have a 20% chance of failing before five years and DVD players have 10%chance of failing before five years. Failures between TV's and DVD players are dependent
a) whats the probability both TV and DVD player are working in five years?
b) what is the probability either your TV or your DVD player will be working in five years?
c) what is probability only one of these items will still be working in five years?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I'm assuming you mean the failures are independent.
a)P=0.8%2A0.9=0.72
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b) P=0.8%2A0.9%2B0.2%2A0.9%2B0.8%2A0.1=0.72%2B0.18%2B0.08=0.98
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c) P=0.2%2A0.9%2B0.8%2A0.1=0.26