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Vitek1552 [10]
3 years ago
11

A light bulb manufacturer claims that the lifetime of the bulbs is normally distributed with a mean of 5000 hours and a standard

deviation of 250 hours. If 20000 bulbs are produced on a particular day, what percentage of the bulbs will have a lifetime of between 4750 and 5500 hours?
Mathematics
1 answer:
daser333 [38]3 years ago
8 0

Answer:

88

Step-by-step explanation:

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