1. True or false: The curve is symmetric.

2. True or false: The total area under the curve equals 1.

3. True or false: If we reject the null hypothesis in an ANOVA, we conclude that there is evidence that all the population means are different.

4. A weighted average (mean) of quantities that are squared is called a ________ ________ [two words].

5. The ________ ________ ________ [three words] measures the variability in the sample means.

6. The ________ ________ ________ [three words] measures the variability within the samples.

7. What do we use for an estimate of the overall population mean?

8. In the ANOVA table, what is the relationship between the quantities in the mean square column with respect to the quantities in the sum of squares column and the degrees of freedom column?

9. For analysis of variance, the -value represents the area to the right of what?

10. Gas Mileage and Number of Cylinders. When it comes to getting good gas mileage, does the number of cylinders in your engine make a difference? The following table provides the summary statistics regarding miles per gallon for 4-cylinder, 6-cylinder, and 8-cylinder cars.

11. Hours Worked and Marital Status. The General Social Survey tracks demographic trends. Here, we are interested in whether the mean number of hours worked differs by marital status. The summary statistics are shown here.

12. Calories in Breakfast Cereals. A dietary researcher is interested in whether differences exist in the mean number of calories in breakfast cereals made by different manufacturers. The summary statistics for the samples from three manufacturers appear in the following table.