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

Using the data below, identify the confidence interval for the mean based on a 95% confidence level. 

Lunch	Dinner
$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