To study the effect of temperature on yield in a chemicalprocess, five batches were produced at each of three temperaturelevels. The results follow.
Temperature |
| 50°C | 60°C | 70°C | |
| 31 | 35 | 28 | |
| 21 | 36 | 33 | |
| 33 | 39 | 33 | |
| 36 | 28 | 35 | |
| 29 | 32 | 36 | |
a. Construct an analysis of variance table (to2 decimals but p-value to 4 decimals, if necessary).
| Source ofVariation | Sum ofSquares | Degrees ofFreedom | Mean Square | F | p-value |
| Treatments | | | | | |
| Error | | | | |
| Total | | | | |
b. Use a  level of significance totest whether the temperature level has an effect on the mean yieldof the process.
Calculate the value of the test statistic (to 2 decimals).
The -value is - Select your answer
-less than .01between .01 and .025between .025 and .05between.05 and .10greater than .10Item 12
What is your conclusion?
- Select your answer
-Conclude that the mean yields for the three temperatures arenot all equalDo not reject the assumption that the mean yields forthe three temperatures are equalItem 13
