11 The numbers a, b, 8, 5, 7 have mean 6 and variance 2. Find the values of a and b, if a
            Mathématiques
            
               
               
            
            
               
               
             
            abdallahirumva99
         
         
         
                Question
            
            11 The numbers a, b, 8, 5, 7 have mean 6 and variance 2. Find the values of a and b, if a