In a study conducted to investigate browsing activity byshoppers, each shopper was initially classified as a nonbrowser,light browser, or heavy browser. For each shopper, the studyobtained a measure to determine how comfortable the shopper was ina store. Higher scores indicated greater comfort. Suppose thefollowing data were collected.
| | Light | Heavy | |
| Nonbrowser | Browser | Browser | |
| 3 | 4 | 7 | |
| 4 | 5 | 9 | |
| 5 | 4 | 7 | |
| 2 | 3 | 9 | |
| 2 | 6 | 6 | |
| 3 | 3 | 8 | |
| 4 | 5 | 7 | |
| 3 | 4 | 9 | |
a. Use a= .05 to test for a difference amongmean comfort scores for the three types of browsers.
Compute the values identified below (to 2 decimals, ifnecessary).
| Sum of Squares, Treatment | |
| Sum of Squares, Error | |
| Mean Squares, Treatment | |
| Mean Squares, Error | |
Calculate the value of the test statistic (to 2 decimals, ifnecessary).
b. Use Fisher's LSD procedure to compare thecomfort levels of nonbrowsers and light browsers. Use a= .05 .
Compute the LSD critical value (to 2 decimals).
