=+4.38 The U.S. Census Bureau (2000 census) reported the following relative frequency distribution for travel time to work for a large sample of adults who did not work at home:

Travel Time Relative

(minutes) Frequency 0 to ,5 .04 5 to ,10 .13 10 to ,15 .16 15 to ,20 .17 20 to ,25 .14 25 to ,30 .05 Travel Time Relative (minutes) Frequency 30 to ,35 .12 35 to ,40 .03 40 to ,45 .03 45 to ,60 .06 60 to ,90 .05 90 or more .02