the night shift workers in three of the super bo's specialty stores stock about 500 products in about 3 hours. how does the rate compare with the stocking done in the other 97 stores in the chain,...

the night shift workers in three of the super bo's specialty stores stock about 500 products in about 3 hours. how does the rate compare with the stocking done in the other 97 stores in the chain, whixh average about 496 products stocked in 3 hours? are the stockers at the specialty stores doing "better than Average" job? heres the info you need

                                  size.      products stocks       standard deviation

specialty stores       3.          500.                             12.56

all stores.               100.        496.                          22.13