a. In 2021, vaccines for COVID-19 will be distributed throughout the world. Make an argument that, based on data for the burden of a certain class of disease, the Arab countries, Iran, and Turkey can be expected to administer these vaccines to larger shares of their populations than most comparison groups of countries.

b. After the revolution in 2019, the government of Sudan abolished laws that restricted women's work outside the home.Suppose that, by 2022, COVID-19 is no longer a problem in Sudan.However, many women who want to work outside their homes still did not do so because they were not informed about the abolition of the laws restricting women's work.The government therefore launches an experimental program in selected localities to publicize the abolition of the laws.

1) Before the program, the average female labor force participation rate was 20 percent in the control localities and 15 percent in the treatment localities.After the program the average female labor force participation rate increases to 22 percent in the control localities and 19 percent in the treatment localities.Find the difference-in-difference estimate of the impact of the program on female labor force participation.Show your calculations, but it is not necessary to make a table.

2) What ongoing socioeconomic trend does the experiment control for?What does the initial difference between the treatment and control localities suggest about how the government chose localities for its program?

c. As a result of the government program, do we expect the secondary (high school) enrollment rates for girls relative to boys to stay the same, increase, or decrease?Why?