Question

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 statistic? Which of these numbers is a parameter?

Answer 1

Parameter=0.40

Statistic=0.36

Explanation:

The population proportion p is the proportion of new drivers passing the behind the wheel test for first time. The parameter is the numerical quantity that describes the population so the parameter here is 40% or 0.40.

The sample proportion p' is the proportion of 50 new drivers from a high school passing the behind the wheel test for first time. The statistic is the numerical quantity that is calculated from a selected sample so the statistic here is 36% or 0.36.