Nine experts rated four brands of Colombian coffee in a taste-testing experiment. A rating on a 7-point scale (1 = extremely unpleasing, 7 = extremely pleasing) is given for each of four characteristics: taste, aroma, richness, and acidity. The following data (stored in Coffee) display the summated ratings, accumulated over all four characteristics.
| BRAND | |||
EXPERT | A | B | C | D |
C.C. | 24 | 26 | 25 | 22 |
S.E. | 27 | 27 | 26 | 24 |
E.G. | 19 | 22 | 20 | 16 |
B.L. | 24 | 27 | 25 | 23 |
C.M. | 22 | 25 | 22 | 21 |
C.N. | 26 | 27 | 24 | 24 |
G.N. | 27 | 26 | 22 | 23 |
R.M. | 25 | 27 | 24 | 21 |
P.V. | 22 | 23 | 20 | 19 |
At the 0.05 level of significance, completely analyze the data to determine whether there is evidence of a difference in the summated ratings of the four brands of Colombian coffee and, if so, which of the brands are rated highest (i.e., best). What can you conclude?
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.