A trainer would like to estimate the number of runs of the same length and same speed it takes for an individual’s body to adjust to the activity. To do this, the trainer selects a random sample of 30 adults who do not currently run and assigns them to run 1 mile at a 12-minute pace every day until they can do so easily. The trainer finds that the standard error of the mean is 2.2 days. What is the interpretation of the standard error of the mean? For this sample of 30 adults, the sample mean amount of time needed to adjust to this workout varied by 2.2 days from the population mean. If we select many random samples of adults who do not currently run and assign them to this training program, the sample mean amount of time needed to adjust to this workout would typically vary by about 2.2 days from the population mean. If we select many random samples of adults who do not currently run and assign them to this training program, the population mean number of days it would take for the participants to adjust to the workout would be approximately 2.2 days. If we select many random samples of adults who do not currently run and assign them to this training program, the population mean number of days it would take for the participants to adjust to the workout would typically vary by approximately 2.2 days.