Test of Independence · Exercise 21

College students may be interested in whether or not their majors have any effect on starting salaries after graduation. Suppose that 300 recent graduates were surveyed as to their majors in college and their starting salaries after graduation. shows the data. Conduct a test of independence.

\begin{array}{|c|c|c|c|}\hline \text{Major} & \text{< $50,000} & \text{}50,000 – \\text{68,999} & \text{$69,000 +} \\ \hline \text{English} & \text{5} & \text{20} & \text{5} \\ \hline \text{Engineering} & \text{10} & \text{30} & \text{60} \\ \hline \text{Nursing} & \text{10} & \text{15} & \text{15} \\ \hline \text{Business} & \text{10} & \text{20} & \text{30} \\ \hline \text{Psychology} & \text{20} & \text{30} & \text{20} \\ \hline\end{array}

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Business Statistics 2e · §11.4 Test of Independence · Exercise 21