Answer:
10.9361
Step-by-step explanation:
The lower control limit for xbar chart is
xdoublebar-A2(Rbar)
We are given that A2=0.308.
xdoublebar=sumxbar/k
Rbar=sumR/k
xbar      R
5.8        0.42
6.1         0.38
16.02    0.08
15.95    0.15
16.12     0.42
6.18      0.23
5.87     0.36
16.2      0.4
Xdoublebar=(5.8+6.1+16.02+15.95+16.12+6.18+5.87+16.2)/8
Xdoublebar=88.24/8
Xdoublebar=11.03
Rbar=(0.42+0.38+0.08+0.15+0.42+0.23+0.36+0.4)/8
Rbar=2.44/8
Rbar=0.305
The lower control limit for the x-bar chart is
LCL=xdoublebar-A2(Rbar)
LCL=11.03-0.308*0.305
LCL=11.03-0.0939
LCL=10.9361
 
        
             
        
        
        
Answer:
c
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Nine is 76, no clue about eight
Step-by-step explanation:
 
        
                    
             
        
        
        
12 x 24= 288     288 x 10 = 2,880    2,880 cubic centimeters
 
        
                    
             
        
        
        
Answer:
x1= -6.6   x2= 8.6
Step-by-step explanation: