Question 858129
Consumer Reports rated airlines and found that 87% 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 212 flights. (Round your answers to two decimal places.) 
What is the expected number that will arrive on time?
R(x) = np = 212*0.87 = 184.44
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What is the standard deviation of this distribution?
std = sqrt(npq) = sqrt(184.44*0.13) = 4.90
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Cheers,
Stan H.
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