Allante Pizza delivers pizzas throughout its local market area at no charge to the customer. However, customers often tip the driver. The owner is interested in estimating the mean tip income per delivery. To do this, she has selected a simple random sample of 12 deliveries and has recorded the tips that were received by the drivers. These data are:
| $2.25 |
$2.50 |
$2.25 |
$2.00 |
$2.00 |
$1.50 |
| $0.00 |
$2.00 |
$1.50 |
$2.00 |
$3.00 |
$1.50 |
Based on these sample data, what is the best point estimate to use as an estimate of the true mean tip per delivery?