The Mean Gross Annual Incomes of Certified Tack Welders Are

question 45

Multiple Choice

The mean gross annual incomes of certified tack welders are normally distributed with the mean of $50,000 and a standard deviation of $4,000. The ship building association wishes to find out whether their tack welders earn more or less than $50,000 annually. The alternate hypothesis is that the mean is not $50,000. If the level of significance is 0.10, what is the decision rule?

• A) Do not reject the null hypothesis if computed z lies between -1.65 and +1.65; otherwise, reject it.
• B) Do not reject the null hypothesis if computed z is greater than 1.65; otherwise, reject it.
• C) Do not reject the null hypothesis if computed z lies between -1.96 and +1.96; otherwise, reject it.
• D) Reject the null hypothesis if computed z is below -1.96; otherwise, reject it.

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Definitions:

Ethical Egoism

A philosophical stance asserting that actions are morally right if they benefit the individual's self-interest.

Moral Development

A process involving the evolution of an individual's understanding, values, and behaviors concerning what is right and wrong, influencing ethical decision-making.

Individualism

A social theory favoring freedom of action for individuals over collective or state control.

Exchange Stage

A phase in the development of relationships, especially in the workplace, where mutual values, benefits, and commitments are established between parties.