The manager of a fast-food restaurant determines that the average time that her customers wait for service is 2 minutes.
The manager of a fast-food restaurant determines that the average time that her customers wait for
service is 2 minutes.
The manager wants to advertise that anybody who isn't served within a certain number of minutes
gets a free hamburger. But she doesn't want to give away free hamburgers to more than % of her
customers. What value of x must she use in the advertisement “if you aren't served within x minutes,
you get a free hamburger”?
Answer: 6
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