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

question 94

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 critical value?

• A) 1.65
• B) 2.58
• C) 1.28
• D) \(\pm\)1.28
• E) \(\pm\)1.645

---

Definitions:

Terminating Resistors

Devices used in electrical systems to prevent signal reflections in transmission lines, enhancing signal integrity.

Global Parameter Group Number

The Global Parameter Group Number is likely associated with a standardized code or identifier used in vehicle systems or protocols to reference specific groups of parameters or settings.

J1939

A standardized vehicle bus protocol used for communication and diagnostics among vehicle components, especially in heavy-duty vehicles.

Virtual Fusing Logic

A software algorithm designed to protect electrical circuits by detecting and preventing potential overloads virtually, before physical fuses react.