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

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Definitions:

Motor Development

The progression of muscular coordination and the ability to move and control the body.

Physical Development

The process that starts in human infancy and continues into late adolescent concentrating on gross and fine motor skills as well as puberty.

Second Trimester

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Fetal Organs

The organs inside a fetus that develop during pregnancy, crucial for life support upon birth.