Answer:
Standardized mortality ratio
Explanation:
In epidemiology, the standardized mortality ratio or SMR, is a quantity, expressed as either a ratio or percentage quantifying the increase or decrease in mortality of a study cohort with respect to the general population.
 
        
                    
             
        
        
        
1. True- because scientific theory means that <span>idea supported through research that attempts to explain existing observations or predict new ones.</span>2. False- because a cross-sectional means that its a study that is about different groups.
3. B-<span>An extraneous variable clarifies the relationship between the independent and dependent variables.</span>
        
                    
             
        
        
        
Answer:
NIOSH doesn't enforce state and and local regulations
 
        
             
        
        
        
Answer:
Explanation:
true because a threat should be know for all employees to possibly not get sued if a customer were to find out about it to it needs to be acknowledged  mostly if working with food chemicals and medical supplies so you don’t  loose a job