Wax-Com Electronics Inc

question 84

Essay

Wax-com Electronics Inc. claims that a certain circuit board has a median operating life of greater than 20,000 hours. A random sample of 25 such circuit boards showed 8 circuit boards failing before 20,000 hours and 17 circuit boards failing after 20,000 hours. Assume the useful life of the circuit board is not normally distributed. Is there evidence to support their claim?
-At a = 0.05,can it be concluded that the sample supports their claim of the company? Assume the useful life of the circuit board is not normally distributed.

---

Definitions:

Optic

Relating to the eye or vision; often used in terms associated with the visual pathways and structures.

Sympathetic Division

The sympathetic division is a part of the autonomic nervous system that prepares the body for physical activity, increasing heart rate, blood pressure, and energy availability.

Heart Contractions

The rhythmic contractions of the cardiac muscle of the heart that pump blood throughout the body.

Gastrointestinal Tract

The part of the digestive system that runs from the mouth to the anus, including all the organs involved in digestion and absorption.