National Bearings manufactures bearings at plants located in Portland Oregon, Houston Texas, and Jacksonville Florida. To measure employee knowledge of Total Quality Management (TQM), six employees were randomly selected at each plant and tested. The test scores for these employees are given the following DATA (attached). Managers want to know if, on average, knowledge of TQM is equal across the 3 plants. Test equality of mean scores at ax=0.05.

Ovservation Portland Houston Jacksonville 85 71 61 75 75 66 82 73 64 76 74 71 71 69 77 85 82 69