The owner of a bistro called First Crush in Potsdam, NY was
interested in studying the...
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Statistics
The owner of a bistro called First Crush in Potsdam, NY wasinterested in studying the tipping patterns of his customers. Hecollected 157 restaurant bills over a two week period that hebelieves provide a good sample of his customers. Seven variables onwhich data were collected are described below:
Variable Description
Bill
Size of the bill (in dollars)
Tip
Size of the tip (in dollars)
Credit
Paid with a credit card? n or y
Guests
Number of people in the group
Day
Day of the week: m=Monday, t=Tuesday, w=Wednesday, th=Thursday,or f=Friday
Server
Code for specific waiter/waitress: A, B, or C
PctTip
Tip as a percentage of the bill
Thanks to Tom DeRosa at First Crush for providing the tippingdata.
Using statistical software, complete the following tasks:
Find the best point estimate for the mean number of Guests whodine at First Crush. (0.5 pts)
​​
Find the margin of error for this point estimate. (1 pt)
Compute and interpret a 95% confidence interval for this pointestimate. (2 pts)
​​Click or tap here to enter text.​
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