Paying for Purchases One Day a Store Tracked the Way

Paying for purchases One day a store tracked the way shoppers paid for their purchases.
Their data are summarized in the table. $\begin{array}{|c|c|c|c|c|}\hline& \text { Cash } & \text { Check } & \text { Charge } & \text { Total } \\\hline \text { Male } & 18 & 10 & 12 & 40 \\\hline \text { Female } & 18 & 12 & 30 & 60 \\\hline \text { Total } & 36 & 22 & 42 & 100 \\\hline\end{array}$
a. What percent of the men paid cash?
b. What is the conditional relative frequency distribution of payment method for women?
c. If you wanted to show the association between gender and method of payment visually, what kind of graph would you make? (Just name it.)
d. Is there evidence of an association between gender and method of payment? Explain briefly.