In: Statistics and Probability
In a study conducted to investigate browsing activity by shoppers, each shopper was initially classified as a nonbrowser, light browser, or heavy browser. For each shopper, the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected.
nonbrowswer: 8, 9, 10, 7, 7, 8, 9, 8
light browser: 7, 8, 7, 6, 9, 6, 8, 7
heavy browser: 3, 5, 3, 5, 2, 4, 3, 5
a. Use to test for a difference among mean comfort scores for the three types of browsers.
Compute the values identified below (to 2 decimals, if necessary).
Sum of Squares, Treatment = | |
Sum of Squares, Error = | |
Mean Squares, Treatment = | |
Mean Squares, Error = Calculate the value of the test statistic (to 2 decimals, if necessary). = b. Use Fisher's LSD procedure to compare the comfort levels of nonbrowsers and light browsers. Use . Compute the LSD critical value (to 2 decimals). |