May I quote from your link?
When you buy a product from a merchant, by state law it comes with an automatic warranty which says that the product will function normally, for its intended purpose, for a reasonable period of time. This is an implied warranty of merchantability.
If the product is defective at purchase, or becomes defective during the period of the implied warranty, both the seller and the manufacturer are responsible for making it right.
Under Massachusetts law, a merchant cannot sell a product "as is." A store's regular return policy does not apply in the case of defective goods.