In Order to Estimate the Difference Between the Yearly Incomes $\alpha$

question 44

Essay

In order to estimate the difference between the yearly incomes of marketing managers in the East and West of the United States, the following information was gathered.
a.Develop an interval estimate for the difference between the average yearly incomes of the marketing managers in the East and West. Use $\alpha$ = 0.05.
b.At 95% confidence, use the p-value approach and test to determine if the average yearly income of marketing managers in the East is significantly different from the West.

---

Definitions:

Depression

A common and serious mood disorder that causes persistent feelings of sadness and loss of interest.

Winter

The coldest season of the year in polar and temperate climates, characterized by short days, long nights, and typically featuring snow, ice, and freezing temperatures.

Biological Clock

An internal mechanism in organisms that controls the cycle of biological processes and behaviors in a roughly 24-hour cycle, known as the circadian rhythm.

Hypothalamus

A region of the brain that controls an immense number of bodily functions, including temperature regulation and thirst.