Table below represent the framework of the labor force in an economy.

Male FemaleTeenagers

Natural rate of Unemployment 4.8%4.5%13.4%

% of labor force 55%30%15%

a- What is the natural rate of unemployment for the entire labor force?

Now suppose the development of internet employment services change the structure of unemployment as follow.

MaleFemaleTeenagers

Natural rate of Unemployment4.3% 4.0%12.4%

b- What is the natural rate of unemployment for the entire labor force