Use A $X^2$ Test to Test the Claim That in the Given Contingency

Essay

Use a $X^2$
test to test the claim that in the given contingency table, the row variable and the
column variable are independent. Responses to a survey question are broken down according
to employment status and the sample results are given below. At the 0.10 significance level,
test the claim that response and employment status are independent. $$\begin{array} { r | c c c } & \text { Yes } & \text { No } & \text { Undecided } \\\hline \text { Employed } & 30 & 15 & 5 \\\text { Unemployed } & 20 & 25 & 10\end{array}$$