Illustrate what is probability which the flashlight perform

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Q. The Ready Light Organization produces a flashlight which is perfectly reliable except for two components: the battery, which has a random failure rate of one in every five hours of operation also the light bulb, which has a random failure rate of three in every ten hours.

If the organization comprises both a backup light bulb also a backup battery with each flashlight, illustrate what is the probability which the flashlight will perform reliably for one hour (excluding replacement time)?

1. a. 0.6720
2. b. 0.7280
3. c. 0.8736
4. d. 0.9100
5. e. 0.9600

 

Reference no: EM1377280

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