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# Quiz #2 Study Guide

Everything that was on the first quiz can also be examined on the second quiz.

Conceptual questions from the Sleuth: (Chap 10, p. 297) 1, 2, 3, 4, 5, 6, 7, 8

Identify the t-statistic and p-value for individual parameter t-tests in R output.

State the null hypothesis being tested for individual parameter t-tests in R output.

Construct the t-statistic for an individual parameter t-test, for the null hypothesis the parameter takes a specific value, given the estimate and standard error.

Interpret the result of a t-test on an individual parameter.

Provide an interpretation for an individual parameter in a regression model.

Calculate an extra SS F-statistic given the residual sum of squares from models of interest.

Interpret the result of an extra sum of squares F-test comparing two models.

Identify models that correspond to equal lines, parallel lines and separate lines.

Identify parameters that capture comparisons of interest in models with indicator variables and interactions between continuous variables and indicator variables.

Translate questions on interest into appropriate hypothesis tests to be tested with t-tests or F-tests.

Choose the appropriate inferential tool to compare models.

Describe the relationship between the response and explanatory variables when an interaction between two explanatory variables is included in a model.

Interpret a confidence interval on the mean response.

Interpret a prediction interval for a future response.

Describe the difference between a confidence interval on the mean response and a prediction interval for a future response.