In: Math
In an effort to promote a new product, a marketing firm asks participants to rate the effectiveness of ads that varied by length (short, long) and by type of technology (static, dynamic, interactive). Higher ratings indicated greater effectiveness.
Source of Variation | SS | df | MS | F |
---|---|---|---|---|
Length | 10 | |||
Technology | ||||
Length × Technology | 142 | |||
Error | 570 | 114 | ||
Total | 862 |
(a) Complete the F-table and make a decision to retain or reject the null hypothesis for each hypothesis test. (Assume experimentwise alpha equal to 0.05.)
Source of Variation |
SS | df | MS | F |
---|---|---|---|---|
Length | 10 | |||
Technology | ||||
Length
× Technology |
142 | |||
Error | 570 | 114 | ||
Total | 862 |