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

question 166

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, the company tests to determine at the 0.05 level whether the population proportion has changed from the previous study. Which of the following is correct?

• A) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has changed over the intervening 10 years.
• B) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has not changed over the intervening 10 years.
• C) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.
• D) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.

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Definitions:

Idealized Self

A version of oneself that represents the standards of perfection, success, and attractiveness set by oneself or by societal expectations, often unattainable and leading to dissatisfaction.

Bowlby and Ainsworth

Refers to John Bowlby and Mary Ainsworth, psychologists known for their work in developing attachment theory.

Birth Order

The theory that the order in which a child is born into a family can influence their personality and psychological development.

Safeguarding Tendencies

Psychological mechanisms that individuals employ to protect their self-esteem or ego from threats and anxiety.