Use the at Least Once Rule to Find the Indicated

question 170

Multiple Choice

Use the at least once rule to find the indicated probability.
-In a batch of 8000 clock radios 3% are defective. A sample of 7 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one of
Those tested is defective. What is the probability that the entire batch will be rejected?

• A)0.192
• B)0.0300
• C)0.143
• D)0.808

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Definitions:

Concrete Operational

A stage in Piaget's theory of cognitive development where children gain the ability to think logically about concrete events.

Analogies

Comparisons made between two things that are otherwise unlike, intended to explain or clarify some unfamiliar or difficult idea or object by associating it with something more familiar.

Mathematical Operations

Basic procedures, including addition, subtraction, multiplication, and division, used in mathematics to calculate and solve problems.

Schema

A cognitive framework or concept that helps organize and interpret information in the brain.