Scenario: Researcher at UNCC wants to see how the average salary differs between rural and urban residents in North Carolina. They collect a stratified random sample of 150 rural and 150 urban working adults across North Carolina and ask them their salary. Based on respondent answers, they find the following statistics: Rural resident mean= 49,408; standard deviation=4,750 Urban resident mean=74,360; standard deviation=8,540. There is a variation in average salaries for both urban and rural residents. For urban residents, calculate the age range that captures 68.26% of respondents reported average salary. In other words, 68% of urban respondents' salary is between