Sharpen Your Statistical Skills

To describe the distribution of sample data

To test hypotheses about population parameters

To estimate population parameters based on sample data (correct)

To make predictions about future data

Two-tailed tests are only used for large sample sizes

One-tailed tests have a smaller rejection region than two-tailed tests (correct)

Two-tailed tests are more powerful than one-tailed tests

One-tailed tests are more conservative than two-tailed tests

To describe the relationship between two variables

To test for a significant difference between two groups

To estimate the mean of a population

To predict the values of one variable based on another variable (correct)