Two Types of Flares Are Tested for Their Burning Times $\text { Brand } \mathrm { X }$

question 28

Multiple Choice

Two types of flares are tested for their burning times (in minutes) and sample results are given below. $\text { Brand } \mathrm { X }$ $\text { Brand } \mathrm { Y }$ n = 35 n = 40 $\overline{x}$ = 19.4 $\overline{x}$ = 15.1 s = 1.4 s = 0.8
Construct a 95% confidence interval for the difference $$\mu \mathrm { X }$$ - $\mu Y$ based on the sample data.

• A)(3.5,5.1)
• B)(3.8,4.8)
• C)(3.6,5.0)
• D)(-4.7,-3.9)
• E)(3.2,5.4)

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Definitions:

Refreezing Phase

The final stage in the change process where new behaviors are solidified into the organization's culture, ensuring changes are maintained over time.

Organization

An arranged group of people and resources structured and managed to meet a need or pursue collective goals.

Human Nature

The inherent characteristics, behaviors, and traits shared by all humans, often considered in the context of moral, social, and philosophical discussions.

Middle Management

A level of management in an organization that is responsible for implementing the policies and plans developed by top management and supervising lower-level management.