4 + y = 19
y = 19 - 4
y = 15
        
             
        
        
        
Answer:
mean lean body mass of the lean monkeys = 8.4kg
mean lean body mass of the obese monkeys = 10.4kg
Step-by-step explanation:
a) Mean = Sum of Body mass/number of body mass
For lean monkeys, mean = (6+7.5+9.2+9.7+9.1+9.1)/6
Mean = 50.6/6
Mean = 8.4
b)
for obese monkeys, mean = (8+9.1+10.3+12+11.9+11.2)/6
Mean = 62.5/6
Mean = 10.4
 
        
             
        
        
        
this is a learning help website? tell me if i am wrong
 
        
                    
             
        
        
        
Linear. Each increase of 1 in x means a decrease of 3 in y, so it has a consistent slope of -3