Size of the Tip in a Restaurant

The datasetRestaurantTipshas information fromFirst Crushbistro in northern New York state. Computer output of descriptive statistics for the variable giving the size of the tip is shown:

VariableNN

*

MeanSE

MeanStDevMinimumQ

1

MedianQ

3

MaximumTip15703.8490.1932.4210.2502.0503.3505.00015.000

Clickherefor the dataset associated with this question.

(a) How many tips are included in the dataset? What is the mean? What is the standard deviation?

Enter the exact answers.

n

=

Enter your answer in accordance to item (a) of the question statement

x

=

Enter your answer in accordance to item (a) of the question statement

s

=

Enter your answer in accordance to item (a) of the question statement

(b) Compute the standard error for the mean using the formulaSE

=

s

n

. Compare the result to the value given under "SE

Mean" in the computer output.

Round your answer to three decimal places.

SE

=

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This isChoose the answer from the menu in accordance to the question statement

the same asdifferent from

the value given in the computer output.

the absolute tolerance is +/-0.001

(c) Use the summary statistics to compute a95

%

confidence interval for the average tip given at this restaurant.

Round your answers to three decimal places.

The95

%

confidence interval isEnter your answer in accordance to item (c) of the question statement

toEnter your answer in accordance to item (c) of the question statement

.