The Mean Monthly Income of a Group of College Students

question 4

Essay

The mean monthly income of a group of college students is $500; the standard deviation is $50. And the mean monthly income is normally distributed. Approximately, what percent of the incomes will lie between $400 and $600?

---

Definitions:

Otoliths

Otoliths are small, calcium carbonate crystals in the inner ear that contribute to the sense of balance and orientation by detecting head movements and gravity.

Stereocilia

Hairlike projections on the surface of certain cells, such as those in the inner ear, which are involved in the mechanosensation process.

Magnesium Chloride

A chemical compound often used in de-icing, dust control, and as a magnesium supplement in agriculture and medicine.

Equilibrium Test

A diagnostic procedure used to assess the balance and coordination by evaluating the vestibular system, which includes parts of the inner ear and brain.