A National Manufacturer of Ball Bearings Is Experimenting with Two

question 53

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.
Assume calculated t to be +2.70; what is the decision at the 0.01 level of significance?

• A) Reject the null hypothesis and conclude the means are different.
• B) Reject the null hypothesis and conclude the means are the same.
• C) Fail to reject the null hypothesis and conclude the means are the same.
• D) Fail to reject the null hypothesis and conclude the means are different.

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Definitions:

Reinvesting Profits

The practice of using earned profits to invest back into the business to promote growth and development.

Declare Dividends

The action by a company's board of directors to distribute profits to shareholders.

Par Value

The face value of a bond or stock as set forth in its certificate.

Two-For-One Stock Split

An action by a company to increase its number of shares by dividing each existing share into two, often to make the stock more affordable.