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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**Anonymous**, Sunday, June 30, 2013 at 10:23pm
Consumer Reports rated airlines and found that 78% of the flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on-time arrival rate is representative of the entire commercial airline industry, consider a random sample of 190 flights. (Round your answers to two decimal places.)

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