please explain steps

11. A recent study examined the effects of carbon monoxide exposure on a group of construction workers. The following table presents the numbers of workers who reported various symptoms, along with the shift (morning, evening, or night) that they worked. (8 points) Shift Morning Evening Night Inuenza 18 ll 19 Headache 22 21 5 Weakness 16 13 Shortness 10 4 of Breath Test the hypothesis of independence. Use the a=0.05 level of significance. What do you conclude? Round all expected frequency to the closest whole number. No credit will be considered for the question which is solved by technology or not rounded to the whole number