If I get a thanks I’ll answer on a diff comment
        
                    
             
        
        
        
Answer:
Hi
Step-by-step explanation:
Why u do dis
 
        
             
        
        
        
The tree diagram of the problem above is attached
There are four outcomes of the two events,
First test - Cancer, Second Test - Cancer, the probability is 0.0396
First test - Cancer, Second Test - No Cancer, the probability is 0.0004
First test -  No Cancer, Second Test - There is cancer, the probability is 0.0096
First test - No cancer, Second Test - No cancer, the probability is 0.9054
The probability of someone picked at random has cancer given that test result indicates cancer is  

The probability of someone picked at random has cancer given that test result indicates no cancer is 
 
 
        
        
        
If u have a open circle, then the inequality has no equal sign. But if it is a closed circle, the inequality has an equal sign.
Shading to the left means " less then " .
Shading to the right means " greater then " .
(1) u have an open circle on -7 with shading to the left....
     x < -7
(2) u have a closed circle on 4.5 with shading to the left....
    x < = 4.5 (thats less then or equal)
(3) u have an open circle on -5 with shading to the right...
     x > -5
(4) u have an open circle on 1.5 with shading to the right...
     x > 1.5