Testing H₀: σ₁² ≤ σ₂²,H_A: σ₁²> σ₂² at α =

question 113

Short Answer

Testing H₀: σ₁² ≤ σ₂²,H_A: σ₁²> σ₂² at α = .05,where n₁ = 16,n₂ = 19,s₁² = .03,and s₂² = .02,can we reject the null hypothesis?

Appreciate the significance of sample size and composition in statistical accuracy.

Identify the characteristics and classification of data within a statistical population.

Understand the concept of external/internal validity in studies and experiments.

Differentiate between observational studies and experiments.

---

Definitions:

Preferred Stock Dividends

Dividends paid on preferred shares of a company which typically have a fixed dividend rate and priority over common stock in dividend payments.

Net Income

The total profit of a company after all expenses, including taxes and operating costs, have been subtracted from total revenue.

Operating Profits

Earnings before interest and tax (EBIT), which is the profit from a business's core operations excluding financing costs and taxes.

Profit Margin

A financial metric used to evaluate a company's profitability, calculated as net income divided by revenue.