Every other year, Running USA conducts a comprehensive study to assess the current state of the sport of running in the United States. By collecting data from runners who Running USA identies as \"core runners.\" active adult participants who tend to enter running events and train year-round, they reveal the profiles and habits of the average runner in the United States. According to the 2013 National Running Survey, the average age of female runners is 39.3. Assume the standard deviation is 5.7. A local running store is interested in creating their own random samples and documenting the average age of female runners in their sample. They sample 50 female runners