Food Container Manufacturer Statistic Homework, Need Help Please.............?

Statistic homework, need help please.............? - food container manufacturer

BV BearVault A boat manufacturer is a kind of cover for the container tightly to use food. The manufacturer must ensure that all their covers are very similar in diameter, which is an upper limit of tolerance for different diameters of the CAP to 0.05 mm. A sample of 28 selections give a margin of 0.015 mm diameter lid. Trial Application of the manufacturer that the deviation of less than 0.05 mm in the alpha  = 0.005 level. What can you conclude?