1. Aircraft primer paints are applied to aluminum surfaces to improve paint adhesion. The process engineering group responsible for this operation is interested in learning whether three different primers differ in their adhesion properties. An experiment was designed and conducted to investigate the effect of paint primer type on paint adhesion. For each primer type, six specimens were painted, then a finish paint was applied, and the adhesion force was measured. The data from the experiment are shown in the following table. Adhesion force (MPa) Primer Type X 4.5 4.5 4 5 55 5 Y 5.5 5.5 6 6.5 7 Z 3.5 4 3 4 5 4.5 a) What type of experiment is this? What type of analysis is needed for the investigation? Break down the details and parameters of this experiment design. You must list the parameters that were considered in the design and also mention the quantity of each. b) Does primer type make a significant impact on adhesion, at 5% significance level? (15 marks)