You Want to See If the Number of Minutes Cell $\mathrm { H } _ { 0 }$

question 41

Multiple Choice

You want to see if the number of minutes cell phone users use each month has changed from its mean of 120 minutes 2 years ago.You take a random sample of 100 cell phone users and find an average of 135 minutes used.

• A) \(\mathrm { H } _ { 0 }\) : ? = 120 \(\mathrm { H } _ { \mathrm { A } }\) : ? > 120
• B) \(\mathrm { H } _ { 0 }\) : ? = 135 \(\mathrm { H } _ { \mathrm { A } }\) : ? > 135
• C) \(\mathrm { H } _ { 0 }\) : ? = 120 \(\mathrm { H } _ { \mathrm { A } }\) : ? < 120
• D) \(\mathrm { H } _ { 0 }\) : ? = 135 \(\mathrm { H } _ { \mathrm { A } }\) : ? ? 135
• E) \(\mathrm { H } _ { 0 }\) : ? = 120 \(\mathrm { H } _ { \mathrm { A } }\) : ? ? 120

---

Definitions:

Nervous System

The network of nerve cells and fibers that transmits nerve impulses between parts of the body, controlling and coordinating bodily functions.

Psychoneuroimmunology

An interdisciplinary field studying the interaction between psychological processes, the nervous system, and the immune system.

Examination Stress

The anxiety, tension, or fear experienced before or during academic tests or examinations, often affecting performance.

Immune Function

The collective activities and capabilities of the immune system to recognize and fight foreign substances, infections, and diseases.