Math Solutions

[Solution] At the time she was hired as a server at the Grumney Family Restaurant, Beth Bridgen was told: "You can average more than $20 a day in tips".

Question: At the time she was hired as a server at the Grumney Family Restaurant, Beth Bridgen was told: "You can average more than $20 a day in tips". Over the first 35 days she was employed at the restaurant, the mean daily amount of her tips was $24.85, with a standard deviation of $3.24. At the 0.01 significance level, can Ms. Bridgen conclude that she’s earning more than $20 in tips, on the average?

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