Answer:
True
Step-by-step explanation:
 Using a random chance procedure to assign subjects to treatment or control reduces bias. d. In a blind experiment, the subjects do not know whether they are in the treatment group or control group.
 
        
             
        
        
        
Answer:
C
Step-by-step explanation:
By tracing the figure, we see that we go around a semicricle twice and go in a straight path twice. So the perimeter of this figure consists of two semicircles and two line segments, hence the answer is C.
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:
From the question we are told that:
Waiting time for a container of the wheels during production 
Average processing time is 
Wheel per container 
Total wheel per day 
Policy variable of  
  
Generally the equation for Total number of container  is mathematically given by
 is mathematically given by

Where
Total time 

Therefore





Therefore the number of Kanban containers needed for the wheels is

 
        
             
        
        
        
Answer:
24xz + 28yz
Step-by-step explanation:
4z(6x + 7y) ← multiply each term in the parenthesis by 4z
= 24xz + 28yz