Population: 
Your hypothesis:
Alternative hypothesis:
Test:
Test left branch: Test right branch:
                Your hypothesis:
Alternative hypothesis:
Test:
Test left branch: Test right branch:
Population
                  
                    1000
                     
                    
                      h1
                    
                    
                      h2
                    
                     
                
                    
               
                    500
                  
                    
                 
                 
                    500
                     base rate   hit + miss            
                    1 - base rate      false alarm(FA) + correct reject(CR)
                    test
                      test
                     
                     
					
					
	                      left
	                    
	                    
	                      right
	                    
						
						          
	                      left
	                    
	                    
	                      right
	                    
		         
                   	 
                   
                  250
                    
                    250
                    
                    250
                    
                    250
                  hit rate  hit
                    miss rate  miss
                    FA rate   FA
                    CR rate   CR
                   
                  p(H/D) = 
                       
                        250 
                        250 +250
                      
                       = 
                     0.5
                  
                  1000