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 $5 \%$ 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"?

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The Answer of 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 $5 \%$ 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"?

The Manager of a Fast-Food Restaurant Determines That the Average 5%5 \%5%

The Manager of a Fast-Food Restaurant Determines That the Average $5 \%$