13. Chi-Square Tests & Goodness of Fit / Contingency Tables / 문제 4
문제 4
A safety agency studied how experience affects drivers’ ability to correctly identify traffic signs during a simulation. Two groups, licensed drivers and learner drivers, were shown standard road signs under timed conditions and were asked to identify them. The table below shows whether their responses were correct or incorrect. At a significance level, test the claim that correct identification is independent of the driver’s experience level.