Test of Independence · Exercise 26
Suppose that 600 thirty-year-olds were surveyed to determine whether or not there is a relationship between the level of education an individual has and salary. Conduct a test of independence.
\begin{array}{|c|c|c|c|c|}\hline \text{Annual salary} & \text{Not a high school graduate} & \text{High school graduate} & \text{College graduate} & \text{Masters or doctorate} \\ \hline \text{< $30,000} & \text{15} & \text{25} & \text{10} & \text{5} \\ \hline \text{}30,000–\\text{40,000} & \text{20} & \text{40} & \text{70} & \text{30} \\ \hline \text{}40,000–\\text{50,000} & \text{10} & \text{20} & \text{40} & \text{55} \\ \hline \text{}50,000–\\text{60,000} & \text{5} & \text{10} & \text{20} & \text{60} \\ \hline \text{$60,000+} & \text{0} & \text{5} & \text{10} & \text{150} \\ \hline\end{array}
This is an open-ended exercise: its source gives no single answer.
OpenStax, Introductory Business Statistics 2e · §11.4 Test of Independence · Exercise 26
No hints for this one.
Check your full solution
Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.
Your first check today doesn't need an account.
Your photos and PDFs are read once and not stored — only the transcription is kept.