The Following Table Shows the Results of Recent Study Regarding

The following table shows the results of recent study regarding gender of individuals and their selected field of study.
$\begin{array}{l|rr|r}\text { Field of study } & \text { Male } & \text { Female } & \text { TOTAL } \\\hline \text { Medicine } & 80 & 40 & 120 \\\text { Business } & 60 & 20 & 80 \\\text { Engineering } & 160 & 40 & 200\\\hline \text { TOTAL } & 300 & 100&400\end{array}$ We want to determine if the selected field of study is independent of gender.
a. Compute the test statistic.
b. Using the p-value approach at 90% confidence, test to see if the field of study is independent of gender.
c. Using the critical method approach at 90% confidence, test for the independence of major and gender.