In an effort to understand the effect of different oil types and insulating mate

Question

In an effort to understand the effect of different oil types and insulating materials types on the hydraulic pump on the output force of the landing gear of an aircraft, two oil types and three hydraulic pump insulator types in the landing gear of an aircraft are measured by an air craft engineer. Thus the higher the output force the safer the landing of the aircraft. Three observations were taken at each of the six treatment conditions (three replicates) and the experiment was randomized. The following data were recorded. Perform a two-way ANOVA and using 5% significance level test each of the following: a) The effect of the factor oil types b) The effect of the factor insulator types c) The effect of the interaction

Explanation / Answer

(a) p- value > 0.05. Not a significant effect

(b) p- value > 0.05. Not a significant effect

(c) p- value > 0.05. Not a significant effect.

Two factor ANOVA Insulation type Means: A B C 1 147.0 185.7 198.3 177.0 Oil type 2 185.0 185.3 189.0 186.4 166.0 185.5 193.7 181.7 3 replications per cell ANOVA table Source SS    df MS F    p-value Oil type 401.39 1 401.389 0.88 .3654 Insulation type 2,424.78 2 1,212.389 2.67 .1097 Interaction 1,895.44 2 947.722 2.09 .1665 Error 5,444.00 12 453.667 Total 10,165.61 17

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