Could you explain thoroughly? Thank you so much!

Problem 2: The advertised claim for batteries for cell phones is set at 48 operating hours, with proper charging procedures. The operating hours of 10000 batteries is tested and 0.30% of them failed during the advertised period. Does this experimental result support the claim that less than 0.5% of the company's batteries will fail during the advertised period? Use hypothesis testing procedure with a = 0.005