Humbert Visited Dolores's Premises and Saw a Sample of Widgets

Humbert visited Dolores's premises and saw a sample of widgets that she was offering for sale.On the basis of that sample,he agreed to buy her entire stock of ten widgets.Dolores was delighted with that sale because she had not previously dealt in widgets and she did not intend to do so again in the future.Humbert paid the price in full and Dolores delivered the widgets to his workshop the next day.Because he was busy,Humbert did not inspect the widgets when they arrived.He simply signed a receipt and placed the widgets in a storeroom.Some time later,however,he discovered that the widgets were defective.He therefore demanded a partial refund.Dolores refused that request on the basis that the defect was fairly obvious.Is Humbert entitled to complain about the defect? Explain your answer.