Mike thinks that there is a difference in quality of life between rural and urban living. he collects information from obituaries in newspapers from urban and rural towns in idaho to see if there is a difference in life expectancy. a sample of 8 people from rural towns give a life expectancy of xr¯=69.4xr¯=69.4 years with a standard deviation of sr=9.15sr=9.15 years. a sample of 5 people from larger towns give xu¯=80.3xu¯=80.3 years and su=9.48su=9.48 years. does this provide evidence that people living in rural idaho communities have different life expectancy than those in more urban communities? use a 2% level of significance.