A Test Of $H _ { 0 } : \mu = 63$

question 41

Multiple Choice

A test of $H _ { 0 } : \mu = 63$ versus $H _ { 1 } : \mu < 63$ is performed using a significance level of $\alpha$ =0.05. The value of the test statistic is z=-1.81. Is $H _ { 0 }$ rejected?

• A) Yes
• B) No
• C) It cannot be determined.

---

Definitions:

Low-Back Pain

A common musculoskeletal disorder affecting the lower portion of the spine, causing discomfort and limited mobility.

Good Posture

The alignment of the body's parts in a manner that maintains the natural curves of the spine and allows for efficient movement and support of the body's weight.

Poor Fitness

A state characterized by inadequate physical condition or lack of physical strength, endurance, and flexibility.

Dynamic Flexibility

The ability of a muscle to quickly and repeatedly stretch and contract through a wide range of motion.