We would like to compare the mean number of children per household in Country A to

1) We would like to compare the mean number of children per household in Country A to the mean number of children per household in Country B. What procedure would be used to make such a comparison? How would sample sizes be chosen?
2) A sample of 100 patients uses a new treatment for weight loss. Describe how one would go about testing the claim that the weight loss treatment is effective.
3) As we near the end of our course, what strategies have proven to help you succeed in this course? What changes have you needed to make along the way? What advice would you offer future students in this course?