C. The birth rate and death rate in every second are the same.D. The newly born babies in every second are in the Asia-Pacific region.【2】What’s the biggest problem for more and more newly born babiesA. They
I agree that the dropout was not random. The dropout rate depended on station characteristics and produced a great reduction of the variance in the sample. And the sample size decreased from 9644 to 1603. The standard error of the sample mean depends on population variance (not estimated an...