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

question 204

Multiple Choice

TABLE 10-10
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 Table 10-11,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

---

Definitions:

Computer-controlled Machines

Machines and systems operated or controlled by computer-based algorithms, often used in manufacturing and production processes.

Manually Performed Tasks

Activities or operations that are executed by hand or physical effort without the aid of automated machinery or technology.

Compressed Workweek

Employment scheduling that allows a full-time job to be completed in fewer than the traditional number of working days per week.

Telecommuting

Involves working at home or other places using computer links to the office.