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 ontime 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.

Statistics Question  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 ontime arrival rate is representative of the entire commercial airline industry, consider a random sample of 190 flights. (Round your answers to two decimal places.)
Answer This Question
Related Questions
 statistics  Consumer Reports rated airlines and found that 80% of flights ...
 Stats  Consumer Reports rated airlines and found that 80% of flights involved ...
 statistics  Air travel is probably not as fun as it used to be. Airlines have ...
 statistics; emergency please help me  Air travel is probably not as fun as it ...
 statistics  Air travel is probably not as fun as it used to be. Airlines have ...
 statistics  According to American Airlines, Flight 215 from Orlando to Los ...
 stats  If one of the 87 flights is randomly selected, find the probability that...
 stats  8.a) Consider the data below for Alaska Airlines and for American West ...
 stats  8.a) Consider the data below for Alaska Airlines and for American West ...
 math  An airlineâ€™s weekly flight data showed a 98% probability of being on time...
More Related Questions