SOLUTION: Consumer Reports rated airlines and found that 82% of the flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on

Algebra ->  Probability-and-statistics -> SOLUTION: Consumer Reports rated airlines and found that 82% of the flights involved in the study arrived on time (that is, within 15 minutes of scheduled arrival time). Assuming that the on      Log On


   

Question 856995: Consumer Reports rated airlines and found that 82% 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 197 flights. (Round your answers to two decimal places.)
What is the expected number that will arrive on time?

What is the standard deviation of this distribution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

p = .82,   n = 197

expected number that will arrive on time is .82%2A197 = 161.54, approximately 162

standard deviation of this distribution = sqrt%28197%2A.82%2A.18%29