A Medical Devices Company Wants to Know the Number of Hours

question 108

Multiple Choice

A medical devices company wants to know the number of hours its MRI machines are used per day. A previous study found a standard deviation of four hours. How many MRI machines must the company find data for in order to have a margin of error of at most 0.5 hour when calculating a 98% confidence interval?

• A) 346.26
• B) 347
• C) 424.69
• D) 425

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Definitions:

Prodromal Stage

The early stage in the development of a disease, before the full-blown symptoms or conditions are apparent, offering potential for early detection and intervention.

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A complex mental disorder characterized by disturbances in thought, perception, and behavior, affecting an individual's ability to discern reality.

Disturbed Thought Processes

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