A soft-drink bottler purchases nonreturnable glass bottles from a supplier. The lower specification on the bursting strength

Question:

A soft-drink bottler purchases nonreturnable glass bottles from a supplier. The lower specification on the bursting strength of the bottles is 225 psi. The bottler wishes to use variables sampling to sentence the lots and has decided to use an of 1%. Find an appropriate set of normal and tightened sampling plans from the standard. Suppose that a lot is submitted, and the sample results yield