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August 3, 2015

Homework Help: Statistics Question

Posted by Sam on Wednesday, December 14, 2011 at 8:26am.

Consumer Reports rated airlines and found that 80% of flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on-time rate is representive of the entire commercial airline industry, consider a random sample of 200 flights. What is the expected number that will arrive on time? What is the standard deviation of this distribution.

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