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Passengers using New York's MetroCard system must swipe the card at a rate between 10 and 38 inches per second, or else the card must be re-swiped through the card reader. Research shows that actual swipe rates by subway riders are uniformly distributed between 5 and 47 inches per second.
(a) What is the mean swipe rate? (Round your answer to 2 decimal places.)
Mean ? inches per second
(b) What is the standard deviation of the swipe rate? (Round your answer to 2 decimal places.)
Standard deviation ? inches per second
(c) What are the quartiles? (Round your answers to 2 decimal places.)
1st Quartile ? inches per second
3rd Quartile ? inches per second
(d) What percentage of subway riders must re-swipe the card because they were outside the acceptable range? (Round your answer to 2 decimal places.)
Re-swipe? %
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