At a certain driver's license testing station only 40% of all new drivers pass the behind-the-wheel test the first time they tak
e 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?
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.
Students with D's / total students : 3 / (7 + 9 + 11 + 3 + 2) = 3 / 32 = 0.0937...to turn to a percent, multiply by 100 = 9.375....rounded = 9.4% <== ur probability
Let the event 'has cancer' be C, and the event 'works for Ajax' be A. P(C) = 0.0019. P(A) = 0.28 The events A and C are independent if P(C|A) = P(C). P(C|A) = 0.0019 = P(C). Therefore the answer is YES.
