To study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature levels. The results follow. Temperature 50°C 60°C 70°C 30 33 28 20 34 33 32...

What am I doing wrong here? How do I have the right answer for the ones that depend on the ones marked wrong?

Extracted text: To study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature levels. The results follow. Temperature 50°C 60°C 70°C 30 33 28 20 34 33 32 37 33 35 26 35 28 30 36 a. Construct an analysis of variance table (to 2 decimals, if necessary). Source of Variation Sum of Squares Degrees of Freedom Mean Square F Treatments 45 22.5 1.14 Error 236 12 19.67 Total 281 14 b. Use a .05 level of significance to test whether the temperature level has an effect on the mean yield of the process. The p-value is greater than .10 What is your conclusion? Conclude that the mean yields for the three temperatures are all equal