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. Influenza Headache Weakness Shortness of Breath Send data to Excel Morning Shift Evening Shift 19 12 15 33 12 14 6 10 Night Shift 17 6 7 7 Test the hypothesis of independence. Use the a=0.05 level of significance and the P-value method with the TI-84 Plus calculator. What do you conclude?

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