2. Using the data in Chapter 14 Data Set 1 and Excel, compute the F value for a comparison among the three levels representing the average amount of time that swimmers practice weekly (<15 hours, 15-25 and>25 hours), with the dependent or outcome variable being their time for the 100-yard freestyle. Answer the question of whether practice time makes a difference. Either use the Data Analysis tools or do the calculations manually.

3. Stephen recognizes that there are different techniques for attracting attention to advertisements, and he wants to test three of these for the sample product: all color, all black-and-white, and a combination. Here are the data on the attractiveness of each product on a scale from 1 to 10. Now he wants to know whether the three formats differ in their attractiveness. Do they?

4. Using the data in Chapter 14 Data Set 1 and Excel, compute the F value for a comparison among the three levels representing the average amount of time that swimmers practice weekly (<15 hours, 15-25 and>25 hours), with the dependent or outcome variable being their time for the 100-yard freestyle. Answer the question of whether practice time makes a difference. Either use the Data Analysis tools or do the calculations manually.

5. Stephen recognizes that there are different techniques for attracting attention to advertisements, and he wants to test three of these for the sample product: all color, all black-and-white, and a combination. Here are the data on the attractiveness of each product on a scale from 1 to 10. Now he wants to know whether the three formats differ in their attractiveness. Do they?