Latasha is a waitress at seventh heaven hamburgers. she, Ask an Expert

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Latasha is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each group at a table leaves for a tip. A random sample of 42 groups gave a mean of $7.30. Based on long term experience, the standard deviation can be taken to be $2.92. Find a 90% confidence interval for the average amount left by all groups.

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9110119

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