The Australian Sheep Dog Is a Breed Renowned for Its

question 24

Multiple Choice

The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 25% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 11 adult dogs is studied.
What is the mean number of dogs who weigh 65 lb or more?

• A) 11
• B) 2.0625
• C) 2.75
• D) 1.4361

---

Definitions:

Bilaterally Symmetric

A form of symmetry where an organism can be divided into two equal halves on a single plane, showing mirror-image right and left sides.

Coelom

A fluid-filled body cavity in many animals, located between the intestinal canal and body wall, lined by tissue derived from mesoderm.

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, giving rise to the nervous system and skin.

Coelom

A fluid-filled body cavity found in most multicellular animals, located between the intestinal canal and the body wall, and surrounded by mesoderm tissue.