A National Manufacturer of Ball Bearings Is Experimenting with Two

question 68

Multiple Choice

A national manufacturer of ball bearings is experimenting with two different processes for
Producing precision ball bearings. It is important that the diameters be as close as possible to an
Industry standard. The output from each process is sampled and the average error from the industry
Standard is calculated. The results are presented below:
The researcher is interested in determining whether there is evidence that the two processes yield
Different average errors.
What is the alternate hypothesis?

• A) µA - µB = 0
• B) µA - µB ≠ 0
• C) µA - µB ≤ 0
• D) µA - µB > 0

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Definitions:

Trading Position

A trading position is the stance an investor takes on the expected future performance of a financial instrument, reflected through either holding or trading the instrument.

Rate of Return

The gain or loss on an investment over a specified time period, expressed as a percentage of the investment's cost.

Invested

The act of allocating resources, typically money, into something with the expectation of generating income or profit, such as stocks, bonds, real estate, or a business venture.

Balance of Trade Surplus

A situation where the value of a country's exports exceeds the value of its imports over a given period, indicating a positive balance of trade.