An Aircraft Manufacturer Requires Bolts That Are Part of the Landing

Short Answer

An aircraft manufacturer requires bolts that are part of the landing gear assembly to have a mean diameter of 1.1 inches with a variance of no more than 0.04 inches2. The bolts are purchased from an outside supplier. A random sample of 30 bolts from a recently received shipment yielded a variance of 0.054 inches2. Should the shipment be returned? Perform the appropriate test of hypothesis using = 0.05.
Test Statistic = ______________
Reject Region: Reject H₀ if > ______________
Conclusion: ______________
Conclusion: ______________