The number of automobiles arriving at 4 toll gated were recorded for 2 hours' time period (10 A.M. to 12 noon) fo each of six working days. The data are as follows. Day Gate 1 Gate 2 Gate 3 Gate 4 Mon 200 225 210 300 Tue 215 230 215 305 Wed 225 240 220 285 Thur 235 245 225 210 Fri 230 210 235 215 Sat 220 200 245 200 Determine whether the rate of arrival is the same at each toll gate. Also verify whether the rate of arrival diffe significantly during the six days or not