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

question 191

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,what is/are the critical value(s) when testing whether the current population proportion is higher than before if α = 0.05?

• A)_±1.645
• B)+1.645
• C)_±1.96
• D)+1.96

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Definitions:

COPD

Chronic Obstructive Pulmonary Disease, a group of lung conditions, including emphysema and chronic bronchitis, that block airflow and make it difficult to breathe.

Legionnaire's Disease

A lung infection caused by Legionella bacteria, often spread through inhaling mist from water sources containing the bacteria.

Pleurisy

An inflammation of the pleura, the membrane that lines the chest cavity and surrounds the lungs, causing sharp chest pain with breathing.

Residual Volume

The amount of air remaining in the lungs after a forceful exhalation, ensuring that gas exchange continues even between breaths.