I am making a multidimensional regression model. The independent variables that I have chosen are :
1)GDP per capita 2)life expectancy 3)average birth per woman 4)female unemployment 5)feminine index within the country
the dependent variable is % of women active economically (working, looking for a job or unemployed, but registered)
I need to state some null hypothesis involving those variables, but for me some are obvious, some not: for instance, it is obvious that the bigger the female unemployment, the lesser women active economically.
My question is: for example what hypothesis do I state considering the relation of GDP and % of women active economically, from the data I can see that in the poorest and wealthiest countries the percentage of women working is the biggest. Are there any articles or theories you would recommend?