Mathematics, 11.12.2019 01:31 emmaphillips2
The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3.5 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 1% of her customers. what number of minutes should the advertisement use
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