Multiple Choice
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?
A) 0.0475
B) 0.0000
C) 0.9525
D) 0.913
Correct Answer:
Verified
Correct Answer:
Verified
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