Answer the following questions.

A firm conducts a study to determine if absenteeism of day worker is different from those employees who work the night shift. A comparison is made of 150 workers for each shift. The results show that 37 day workers have been absent at least five times over the past year, while 52 night workers have missed at least five times. What does this reveal about the tendency for absenteeism among the worker? Calculate a 90% C.I for the difference in the proportion of workers on the two shifts who missed at least five times