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

question 11

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 10-10, 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:

Sexual Maturity

The stage of development at which an individual becomes physically and biologically capable of sexual reproduction.

Secular Trend

A long-term pattern or trend observed in societal, economic, or environmental data over a significant period.

Higher Standard

An elevated or improved level of quality or excellence.

Developed Countries

Nations with advanced economies characterized by high industrialization, significant gross domestic product (GDP) per capita, and generally high standards of living.