Answer:
54.80 MPa to 55.92 MPa
Step-by-step explanation:
Sample mean fracture strength (x) = 55.36 MPa
Sample standard deviation (s) = 3.99 MPa
Sample size (n) = 196.
The upper and lower bounds for a 95% confidence interval are given by:

The upper and lower bounds of the confidence interval are;

The 95% confidence interval for true average fracture strength is 54.80 MPa to 55.92 MPa
 
        
             
        
        
        
Answer:
72 + 8x 
you would multiply 8 by 9 + x 
 
        
             
        
        
        
Step-by-step explanation:
thats is all,just subject of formula
 
        
             
        
        
        
Answer:
They are placed in right order (quite interesting).
Step-by-step explanation:
Just drag each answer choice as they are placed.
Best Regards!
 
        
             
        
        
        
A=LW, we are told that the dimensions are 42 and 48 so:
A=42*48
A=2016in^2