To study the effect of temperature on yield in a chemical process, four batches were produced at each of three temperature levels. The results follow. Construct an analysis of variance table.
Use a .05 level of significance to test whether the temperature level has an effect on the mean yield of the process.
50 Degrees C 60 Degrees C 70 Degrees C
34 30 23
24 31 28
36 34 28
39 23 30