A study investigated if cell phone use impacted student drivers' reaction times. There were two groups: 27 students were assigned to the cell phone group while 27 students were assigned to the control group. The experiment measured the response time to traffic lights; for the cell phone group, the mean was 585.3 with a standard deviation of 85.2 and for the control group, the mean was 537.9 with a standard deviation of 66.3. Construct a 90% confidence interval for the difference in mean response times between the cell phone and control groups.