A three level factorial design was carried out to evaluate the effects of 3 fact

Question

A three level factorial design was carried out to evaluate the effects of 3 factors on two responses. Evaluate the interaction plots and determine which settings would be selected if the goal was to minimize T20. T20 Interaction Select one:

a. Low Air Volume, High Product Temp, Low Spray Rate

b. Low Air Volume, High Product Temp, High Spray Rate

c. High Air Volume, Low Product Temp, High Spray Rate

d. High Air Volume, High Product Temp, Low Spray Rate

Air Volume Interaction Plot for T20 Data Means 28 36 10 30 32 20 Product Temp Spray Rate 3.00 2.75 2.50 3.00 2.75 2.50 Air Volume 80 110 140 Product Temp 28 32 36

Explanation / Answer

Looking at top left plot - T20 is minimum at High Air Volume (140) and High Product Temp (36)
Looking at top right plot - T20 is minimum at High Air Volume (140) and Low Spray Rate (10)
Looking at bottom plot - T20 is minimum at High Product Temp (36) and Low Spray Rate (10)

So the correct option is d. High Air Volume, High Product Temp, Low Spray Rate

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