The data below represents the number of driving errors made by drivers who did or did not attend driving school (coded 1 if they didn’t, 2 if they did) and at day or night (coded 1 for day, 2 for night). Testing was performed on Saturdays and Sundays (coded 1 Saturday, 2 Sunday)
Determine if there is any effect of driving school and whether its effect is influenced by lighting conditions. Be sure to include a complete analysis (i. e., all assumptions checked, and full understanding of effects garnered) and a clear summary with all needed statistical details included.