A manufacturing process produces auto tires. A sample of miles at replacement is recorded:

Mileage at Replacement:

49299 50695 51172 50762 50953 48089 50535 48890 49737 48993 51166 50078 49778 49633 50422 49492 49824 50027 48256 48982 49258 47945 50469 50642 51409 51308 50668 52834 50457 50040 50546 49760 50378 50798 49370 49029 51339 48612 50634 50000 52087 50729 49121 48639 49222 49443 48483 50480 51243 50225

At what mileage should the warranty be set at for warranty replacement of 0.5% of the tires?