The same six testers rated the taste of two ice creams. Taste ratings are not normally distributed, so a t-test should not be done.Is there a significant difference in the ratings of the two ice creams?
                 Brand A           Brand B
Taster 1           7                      4                      
Taster 2           5                      6                      
Taster 3           9                      7                      
Taster 4           4                      7                      
Taster 5           8                      5                      
Taster 6           8                      7