The worked solution builds line by line under the picture after a correct answer or when you ask for it.
Your jobQuick-fire chi-square questions: degrees of freedom, expected counts, which test fits, and where the p-value falls. Answer as many as you can in 60 seconds. Three right in a row earns double points. Keys 1 2 3 pick an answer.
Press Start to begin.
Fictional settings and practice numbers chosen to look realistic. They are not clinical reference values or advice.
Wrong picks are fine here. Each one tells you why.