The Following Data Shows Annual Income, in Thousands of Dollars

question 91

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. $$\begin{array} { l c c } & \text { Female } & \text { Male } \\\text { High school } & 23,27,24,26 & 25,26,22,24 \\\text { College } & 28,36,31,33 & 35,32,39,28 \\\text { Advanced degree } & 41,38,43,49 & 35,50,47,44\end{array}$$

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