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

question 25

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:

Psychopathology

The study of mental disorders and abnormal behavior, including their symptoms, causes, and treatments.

Diagnostic

Relating to the assessment and determination of specific diseases or disorders through systematic analysis.

Inflections

Variations in the form of words to express different grammatical categories such as tense, mood, voice, aspect, person, number, gender, and case.

Biological Correlates

Biological factors or processes that are associated with specific psychological or behavioral phenomena.