In a population of adults, the mean pulse rate is 75.4 beats per minute. A random sample of 50 adults is selected from this population, and the sample has a mean pulse rate of 72.8 beats per minute. We call the number 72.8 a ___________________ and the number 75.4 a __________________. Group of answer choices statistic; parameter , parameter; parameter , None of the other answers options are correct. , statistic; statistic , parameter; statistic