A random sample of 20 U.S. weddings yielded the following data on wedding costs in dollars:

11120, 22170, 10559, 28596, 33628, 21014, 11562, 26556, 17563, 22561,
17070, 26777, 28443, 22221, 11205, 21031, 11817, 20351, 30177, 31044

a) Use the data to obtain a point estimate for the population mean wedding cost, $\mu$, of all recent U.S. weddings. Note: The sum of the data is 425465.
$\bar{x} =$

b) Is your point estimate in part (a) likely equal to $\mu$ exactly (yes or no)?