The Mean Gross Annual Incomes of Certified Tack Welders Are $\neq$

question 28

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. Which of the following is the alternate hypothesis?

• A) p \(\neq\) $50,000
• B) \(\mu\) \(\neq\) $50,000
• C) \(\mu\) < $50,000
• D) \(\mu\) = $50,000
• E) p = $50,000

---

Definitions:

Restructuring Database

The process of organizing or reorganizing a database to improve its efficiency, performance, or usability.

Changing Characteristics

The process or act of altering features, qualities, or attributes of something, often implying evolution or improvement.

Find Button

A feature in software that allows users to search for specific text, files, or information quickly.

HOME Tab

The primary or default tab in many software applications, offering access to the main functions and settings.