The diagnostic test that records the electrical activity of the heart is called ECG or Electrocardiogram. An ECG is a painless and simple test, which uses electrodes arranged and attached to your skin, and records the activity of the heart. ECG detects any abnormal rhythm and pattern of the heart beat and this helps doctors in diagnosing arrhythmias. 
        
             
        
        
        
Answer:
Probability of tractor do not start = 7.67%
Explanation:
Given data:
Probability of not start at red = 6%
Probability of not start at white = 11%
Probability of not start at Blue = 8%
Percentage of  tractors produced in red line = 48%
Percentage of  tractors produced in white line = 31%
hence Percentage of  tractors produced in white line = 1 - 0.48 - 0.31 = 0.21
Probability of tractor do not start 
Probability of tractor do not start = 0.0288 + 0.0231 + 0.0248 = 0.0767
Probability of tractor do not start = 7.67% 
 
        
             
        
        
        
Generally it can either be ones feelings about oneself or ones past experiences, usually the two link in some way
        
                    
             
        
        
        
C. a person who is in a monogamous relationship and has protected sex.