A Laboratory Wishes to Compute a 95% Confidence Interval for the Mean

question 79

Multiple Choice

A laboratory wishes to compute a 95% confidence interval for the mean amount of cholesterol,in milligrams,in chicken eggs.They believe the population standard deviation to be 15 milligrams.How many eggs should they use if they want a margin of error of 10 milligrams?

• A)9
• B)8
• C)12
• D)10
• E)11

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Definitions:

Concrete Operations

A stage in Piaget's theory of cognitive development, typically occurring from age 7 to 12, where children gain the ability to think logically about concrete events.

Logical Operations

Mental processes that follow systematic patterns of thinking, allowing for problem-solving and reasoning based on established rules.

Abstract Thinking

The ability to think about objects, principles, and ideas that are not physically present, involving complex thought processes like analysis and synthesis.

Formal Operations

The final stage in Piaget's theory of cognitive development, characterized by the ability to think abstractly and logically.