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Instruction 10-9
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 Instruction 10-9,in testing the difference between two proportions using the normal distribution,you may use a two-tailed Z test.
Control
In experimental research, the standard to which comparisons are made by maintaining constant factors aside from the variable being tested.
Success
The achievement of set goals or objectives, often recognized by positive outcomes.
Confidence
A belief or trust in one's abilities, qualities, or judgment, often seen as a foundational psychological trait influencing behavior and mental health.
Personality
The combination of characteristics or qualities that form an individual's distinctive character and behavioral patterns.
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