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

question 196

Short Answer

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, construct a 95% confidence interval estimate of the difference in proportion of workers who would like to attend a self-improvement course in the recent study and the past study.

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Definitions:

Yield Strength

The stress level at which a material begins to deform permanently, marking the transition from elastic to plastic behavior.

HSLA Steel

High-Strength Low-Alloy Steel, a type of carbon steel that combines strength, weldability, and corrosion resistance at a lower weight.

Dump Box

A dump box is a container mounted on trucks or trailers used for transporting and unloading bulk materials by tipping or lifting.