Instruction 10-9 A Corporation Randomly Selects 150 Salespeople and Finds That 66

question 88

Multiple Choice

Instruction 10-9
A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement course would like such a course.The firm did a similar study 10 years ago in which 60% of a random sample of 160 salespeople wanted a self-improvement course.The groups are assumed to be independent random samples.Let π₁ and π₂ represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the past study,respectively.
-Referring to Instruction 10-9,if the firm wanted to test whether this proportion has changed from the previous study,which represents the relevant hypotheses?

• A)H₀: π₁ - π₂ ≥ 0 versus H₁: π₁ - π₂ < 0
• B)H₀: π₁ - π₂ ≤ 0 versus H₁: π₁ - π₂ > 0
• C)H₀: π₁ - π₂ ≠ 0 versus H₁: π₁ - π₂ = 0
• D)H₀: π₁ - π₂ = 0 versus H₁: π₁ - π₂ ≠ 0

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Definitions:

Profit Centers

Profit centers are divisions or branches of a company that are responsible for generating their own revenue and profits, contributing to the overall success of the business.

Centralization

The organizational structure where decision-making authority is concentrated at the top levels of management.

Investment Centers

Parts of an organization with control over their own revenues, expenses, and investments, whose performance is measured by return on investment (ROI).

Responsibility Center

An organizational unit for which a manager is assigned responsibility over costs, revenues, or assets.