Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You collect data from a random sample of 11 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows:

2.2
2.7
2.9
2.9
2.2
2
2.4
2.1
2.2
2.9
2.5

What is a point estimate for the population mean length of time. (Round answer to 4 decimal places)