The Following Data Shows Annual Income, in Thousands of Dollars

Essay

The following data shows annual income, in thousands of dollars, categorized according to the
two factors of gender and level of education. Assume that incomes are not affected by an
interaction between gender and level of education, and test the null hypothesis that level of
education has no effect on income. Use a 0.05 significance level. $$\begin{array} { l c c } & \text { Female } & \text { Male } \\\text { High school } & 23,27,24,26 & 25,26,22,24 \\\text { College } & 28,36,31,33 & 35,32,39,28 \\\text { Advanced degree } & 41,38,43,49 & 35,50,47,44\end{array}$$