desl7709 desl7709

29-07-2018
Mathematics

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A certain type of light bulb has a failure rate of 2.4%. What is the expected number of failures if 800 light bulbs are tested?

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meyet626 meyet626

29-07-2018

If there is a failure rate of 2.4% that means 2.4 out of every 100 will fail.

Since there are 800 lightbulbs if you mutiply 2.4 by 8 you will get:

19.2

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