For one population mean, write a problem (ex. we are investigating the students' grades from STAT 201). Then estimate the population mean (you can take any value you like. Not necessary to obtain the data and make calculations) and interpret it (I want you to interpret this value in an appropriate way-in a nice sentence such that it will be understood by any person who knows nothing about statistics). Then take an interval estimate and interpret it. Then construct 3 hypothesis about it (one two-tailed, one right-tailed, one left-tailed) then a) interpret it when you reject the null hypothesis b) interpret it when you fail to reject the null hypothesis for all 3 situations.

Then do the same things for the differences of two population means. Interpret the point and interval estimate and hypothesis test (3 versions-2 decision cases like in one-sample mean case).