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An industrial fan is designed to move 2500 ft3of air per minute, on average. Under normal operating ...

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An industrial fan is designed to move 2500 ft3of air per minute, on average. Under normal operating ...

An industrial fan is designed to move 2500 ft³of air per minute, on average. Under normal operating conditions, the standard deviation of air volume moved by this fan is 300 ft³/min. If the fan is operating as designed, what is the probability that the average of 30 randomly selected measurements of fan capacity will be less than 2000 ft³/min?

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0.0475

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0.0000

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0.9525

▸

0.913

Textbook

Introductory Statistics: A Problem-Solving Approach

Edition: 3^rd

Author: Kokoska

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