Answer:
c or 1,500
Step-by-step explanation:
hope this helps lol
 
        
                    
             
        
        
        
Answer:
 (1,155, 1.545).
Step-by-step explanation:
From Normal distribution tables the z score for 95% CI  = 1.96.
Confidence Interval 
= 1.35 +/- 1.96 * 0.63/√40
=  1.35 +/- 0.195
 =  (1,155, 1.545).
 
        
             
        
        
        
The Answer is C, my good friend.