At a certain driver's license testing station, only 40% of all new drivers pass the behind‑the‑wheel test the first time they take it. A sample of 50 new drivers from a certain high school found that 36% of them had passed the test the first time. Which of these numbers is a parameter?
Parameters means features or values derived from a population e.g means, standard deviation etc. From the above it means 18 out of every 50 drivers have passed the test the first time.