Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below: $1 1 .00 | $8.00 | $6.00 | $4.00 | $11.00 a) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*)

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Author:Amos Gilat
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Nancy is a waitress at Seventh Heaven Hamburgers. She wants to estimate the average amount each table leaves for a tip. A random sample of 5 groups was taken and the amount they left for a tip (in dollars) is listed below:

$1 1 .00 | $8.00 | $6.00 | $4.00 | $11.00

a) Find a 90% confidence interval for the average amount left by all groups. (*round to the nearest cent*)

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