Mathematics, 20.11.2019 05:31, kelebsessoms89

People tend to be more generous after receiving good news. are they less generous after receiving bad news? the average tip left by adult americans is 19% . give 20 patrons of a restaurant a message on their bill warning them that tomorrow's weather will be bad and record the percentage tip they leave. given are the tips as a percentage of the total bill.

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People tend to be more generous after receiving good news. are they less generous after receiving ba...