LEARNING OBJECTIVES
After studying this chapter, you should be able to:

• Explain the need to compare two population parameters.
• Conduct a paired-difference test for difference in population means.
• Conduct an independent-samples test for difference in population means.
• Describe why a paired-difference test is better than an independent-samples test.
• Conduct a test for difference in population proportions.
• Test whether two population variances are equal.
• Use templates to carry out all tests.