Enteroliths Are Calcifications That Form in the Gut of Horses

question 30

Multiple Choice

Enteroliths are calcifications that form in the gut of horses. The stones can cause considerable morbidity and mortality. A study was conducted to investigate factors (such as age, diet, and environment) that may be related to the formation of enteroliths. The researchers decided to draw two histograms: one for horses with enteroliths (cases) and one for horses without (controls) . The number of horses 20 years and older:

• A)is larger among the cases.
• B)is smaller among the cases.
• C)is about the same for both.
• D)cannot be determined from the histogram.

---

Definitions:

AVC Curve

The Average Variable Cost curve depicts the per-unit variable cost of production as a function of total output.

ATC Curve

The Average Total Cost curve, illustrating how the total cost per unit of output changes with the level of output.

Marginal Output

The additional output that can be produced by adding one more unit of a particular input, while holding all other inputs constant.

Variable Inputs

Variable inputs in production are those inputs that change in quantity with the level of output, such as raw materials and labor.