Question: A defense contractor that assembles night - vision goggles has a persistent issue with late material deliveries by suppliers. The firm hires a Supply Chain

A defense contractor that assembles night

-

vision goggles has a persistent issue with late material deliveries by suppliers. The firm hires a Supply Chain

/

Operations consultant who creates a Supplier Performance Rewards program for the firm's suppliers. Before the firm implemented the program, the consultant collected the time to delivery on

100

different parts. After three months of perfect implementation, they collected new time to delivery data on the same

100

parts delivered by the same suppliers. The consultant now wants to know whether this test is Two Independent Means or Paired Means.

Based on the above scenario, is this test a test of Two Independent Means or Paired Means?

A defense contractor that assembles night-vision goggles has a persistent issue

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