Mathematics, 05.05.2020 05:09 zakwolthuis

At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, "You can average $80 a day in tips." Assume the population of daily tips is normally distributed with a standard deviation of $2.81. Over the first 42 days she was employed at the restaurant, the mean daily amount of her tips was $82.74. At the 0.10 significance level, can Ms. Brigden conclude that her daily tips average more than $80?

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At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, "You...