In a normal distribution, the median (I think you meant to say) is equal to the mean and mode.
        
             
        
        
        
Answer: 4/15
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
20 points
Step-by-step explanation:
Points: 
- 21, 13, 14 and x for the last game
 
Average:
- (21+13+14+x) / 4 = 17
 - 48 + x = 4*17
 - 48 + x = 68
 - x = 68 - 48
 - x = 20
 
They must score 20 points
 
        
             
        
        
        
75.3982237 inches squared is the answer, round it to whatever decimal place your asked to.