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Unformatted text preview: salaries of the teachers. Question 3 (a) diﬀerence for weekly program = 5 . 2-4 . 1 = 1 . 1 diﬀerence for monthly program = 4 . 5-3 . 9 = 0 . 6 1 diﬀerence in diﬀerence = 0 . 5 diﬀerence in cost between weekly and monthly program = $5 /student reduction in births per dollar = 0 . 5 / 5 = 0 . 1 (b) i. Expected sex ratio = 1, so 21 million females are expected. 21-20 = 1 million females missing. 1 / 20 = 5% of females are missing. ii. Women live longer than men, so countries with older populations will have lower ratios of males to females even if they do not treat girls better than countries with younger populations. iii. We would like to know the sex ratio at birth. If it is the same as ”expected”, this favors the neglect explanation over the abortion explanation. 2...
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- Spring '08
- school enrollment rates, Natural resource abundance