THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING

question 191

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING:
In a shipment of 18 trucks to a local truck dealer,there are four trucks that don't have air conditioning.Assume that you select four trucks at random.
-What is the probability that two or fewer of the four don't have air conditioning?

• A)0.7727
• B)0.9814
• C)0.8169
• D)0.9242

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Definitions:

Maturation

In experimental design, the problem of individuals changing over time, most obviously by getting older.

Experimental Research

A scientific approach that manipulates one variable to observe its effect on another, within a controlled environment, to establish cause-and-effect relationships.

Change

The process or act of making or becoming different, often considered in the context of personal, organizational, or social evolution.

Internal Validity

The degree to which a study or experiment accurately establishes a cause-effect relationship without the influence of external factors.