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Carbon monoxide: 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. Morning Shift Evening Shift Night Shift Influenza 12 19 20 Headache 18 34 5 Weakness 10 10 Shortness of Breath ll 9 3 ( Send data to Excel ) Test the hypothesis of independence. Can you conclude that symptoms and shift are not independent? Use the a = 0.01 level of significance and the P-value method with the TI-84 Plus calculator