Find the Standardized Test Statistic, T, to Test the Hypothesis

question 119

Multiple Choice

Find the standardized test statistic, t, to test the hypothesis that μ1 < μ2. Two samples are randomly selectedand come from populations that are normal. The sample statistics are given below. $$\begin{array}{l}\mathrm { n } _ { 1 } = 15 \quad \mathrm { n } _ { 2 } = 15\\\bar { x } 1 = 27.44 \quad \bar { x } 2 = 29.99\\\mathrm { s } _ { 1 } = 2.9 \quad \mathrm {~s} _ { 2 } = 2.8\end{array}$$

• A) -2.450
• B) -3.165
• C) -1.667
• D) -0.669

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Definitions:

Gross Profit

The distinction between the income from sales and the expense of goods sold prior to subtracting costs for overheads, wages, taxes, and interest.

Cost of Goods Sold

This is an accounting term that refers to the direct costs attributable to the production of the goods sold by a company.

Income from Operations

Revenue from a company's everyday business activities minus the costs and expenses associated with those operations.

Operating Expenses

Costs associated with the day-to-day operations of a business, including rent, utilities, salaries, and office supplies, but excluding cost of goods sold and capital expenditures.