Find the Sample Size

question 9

Multiple Choice

Find the sample size.
-The Quality Control Department wants to estimate the true percentage of rework for
Electrical components to within ±4%, with 99% confidence. Based on similar past
Studies, the percentage of rework was found to be 12%. How many components should
They sample?

• A) 651
• B) 1000
• C) 344
• D) 438
• E) 579

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Definitions:

Psychotherapy

A general term for treating mental health problems by talking with a psychiatrist, psychologist or other mental health provider.

Biomedical Therapy

A treatment modality targeting biological underpinnings of mental disorders through medication or other medical procedures.

Electroconvulsive Shock Therapy

A psychiatric treatment in which seizures are electrically induced in patients to provide relief from mental disorders.

Psychoanalytic

Relating to a theory of psychology which emphasizes unconscious psychological processes and is credited to Freud.