SCENARIO 10-10
a Corporation Randomly Selects 150 Salespeople and Finds $\pi$

question 113

Multiple Choice

SCENARIO 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 $\pi$ ₁ and $\pi$ ₂ 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 Scenario 10-10,what is/are the critical value(s) when testing whether population proportions are different if ? = 0.10?

• A)\(\pm\) 1.645
• B)\(\pm\) 1.96
• C)-1.96
• D)\(\pm\) 2.08

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Definitions:

Pectoralis Major

A significant muscle located in the upper part of the chest, aiding in arm and shoulder motion.

Upper Chest

Refers to the region of the body encompassing the upper part of the thorax, including the pectoral muscles, clavicles, and upper ribs.

Cramp

A spasmodic, painful contraction of a muscle or muscles.

Contracted

Engaged by agreement or compact; often refers to muscles shortening during contraction or to formal agreements between parties.