1. An overview to this point
What methods do I use?
An overview to this point

2. One or Two or More Populations?
Is the study comparative in nature or are we making an inference about a single population?
If there is a single population then we need decide whether or not we have a numeric or categorical/nominal outcome.

3. Single Population Inference
If the outcome or response is numeric then we use:
Hypothesis Tests and CI’s for m

4. Single Population Inference
If the outcome or response is a dichotomous outcome (i.e. Yes/No or Success/Failure) then we use:
Hypothesis Tests and CI’s for p

5. Summary of Inference for m
Assuming either the outcome comes from a normally distributed population or if the sample size is sufficiently large.
Test Statistic
Sample size required for
margin of error (E) with
Confidence Interval for m 95% confidence

6. Summary of Inference for p
Assuming the sample size n sufficiently large.
Test Statistic Sample size required for
margin of error (E) with
95% confidence assuming
prior value for p
Confidence Interval for m Conservative approach