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

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

Correct Answer:

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