Question

The yield of an active ingredient in a chemical plant is being studied. It is known that the two most significant variables in the process are: temperature and pressure. Two levels of each factor are selected with two replicas in each case. The yield of the active ingredient was as follows according to the experimental design described above:

Temperature	Pressure
	Low	High
Low	90.4 90.2	90.2 90.4
High	90.5 90.7	90.4 90.1

Construct the ANOVA table for this experiment design.
Verify if the interaction of the factors is significant at a confidence level of 0.05.

Please Show calculations by hand and verify their result on computer.

Answer 1