What is the Null Hypothesis that is being tested here with the Chi-square test? What is the Alternative or Research Hypothesis?

Statistics by Geoffrey

Statistics Question

1. What is the Null Hypothesis that is being tested here with the Chi-square test? What is the Alternative or Research Hypothesis?

What are the degrees of freedom? Can you reject the Null Hypothesis? Why or why not? Precisely how confident would you be in rejecting the Null Hypothesis?