Can someone please help me?
The Normal Distribution (Algebra 2)
LIGHT BULBS: The time that a certain brand of light bulb last before burning out is normally distributed. About 2.5% of the bulbs last longer than 6800 hours and about 16% of the bulbs last longer than 6500 hours. How long does the average bulb last?

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lol ok thats says that your 2nd standard deviation starts at 6800 and 1st starts at 6500

your mean would be 6200

do you understand why??

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