In: Statistics and Probability
The owner of a bistro called First Crush in Potsdam, NY was
interested in studying the...
The owner of a bistro called First Crush in Potsdam, NY was
interested in studying the tipping patterns of his customers. He
collected 157 restaurant bills over a two week period that he
believes provide a good sample of his customers. Seven variables on
which 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 tipping
data.
|
Using statistical software, complete the following tasks:
-
Find the best point estimate for the mean number of Guests who
dine 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 point
estimate. (2 pts)
Click or tap here to enter text.
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