Yes, since it's the amount per ONE song.
        
                    
             
        
        
        
Answer:
The percentage is 
Step-by-step explanation:
From the question we are told that 
    The population mean is  
      The standard deviation is  
The  percent of people who write this exam obtain scores between 350 and 650     
     
Generally  
                
    
    
    
From the z-table  
    and 
=>    
=>  
Therefore the percentage is  