Exercise 1: The marketing team from Mi Casa Front Porch Restaurant is looking to promote the restaurant on the internet. They want to provide a realistic view of ranges for average bill for a party of 2 for lunch and dinner. They have gathered the following data from a sample to use. Calculate and interpret the confidence intervals for the mean that should be used for both lunch and dinner using a 95% confidence level.
Exercise 2:
Using the data below, identify the confidence interval for the mean based on a 95% confidence level.
|
Lunch
|
Dinner
|
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$23.36
|
$44.00
|
|
$12.50
|
$51.90
|
|
$15.87
|
$49.70
|
|
$17.56
|
$40.00
|
|
$14.56
|
$55.50
|
|
$19.22
|
$33.00
|
|
$22.00
|
$43.40
|
|
$10.15
|
$41.30
|
|
$18.50
|
$45.20
|
|
$15.20
|
$40.70
|
|
$20.90
|
$41.10
|
|
$12.10
|
$49.10
|
|
$18.80
|
$30.90
|
|
$13.10
|
$45.20
|
|
$19.20
|
$55.30
|
|
$18.60
|
$52.10
|
|
$15.50
|
$55.10
|
|
$13.30
|
$38.80
|
|
$11.90
|
$43.10
|
|
$14.00
|
$39.20
|
|
$15.20
|
$58.60
|
|
$17.90
|
$49.80
|
|
$16.60
|
$43.20
|
|
$19.20
|
$47.90
|
|
$18.80
|
$46.60
|