Twenty-One Executives in a Large Corporation Were Randomly Selected to Study

question 115

Multiple Choice

Twenty-one executives in a large corporation were randomly selected to study the effect of several
Factors on annual salary (expressed in $000s) . The factors selected were age, seniority, years of
College, number of company divisions they had been exposed to, and the level of their
Responsibility. The results of the regression analysis follow:
Test the hypothesis that the regression coefficient for education is equal to 0 at the 0.05
Significance level. Report the critical value, the calculated test-statistic, and your decision.

• A) t-critical = ±2.131, t-calculated = 3.752, reject the null hypothesis and conclude that education and salary are significantly related.
• B) t-critical = ±2.131, t-calculated = 3.752, fail to reject.
• C) t-critical = ±1.753, t-calculated = -0.169, fail to reject.
• D) t-critical = ±1.753, t-calculated = -3.752, reject the null hypothesis and conclude that education and salary are significantly related.

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Definitions:

Acute Dystonic Reaction

A sudden, severe involuntary muscle contraction, often a side effect of certain psychiatric medications.

Diphenhydramine

An antihistamine drug used to relieve symptoms of allergy, hay fever, and the common cold, as well as for inducing sleep.

Haloperidol

An antipsychotic medication used to treat a variety of psychiatric conditions by altering the effects of chemicals in the brain.

Acute Dystonic Reaction

A sudden, involuntary muscle contraction, often a side effect of certain medications, leading to abnormal postures or movements.