14.27. Reconsider the experiment in Problem 14.26. This is a rather large experiment, so suppose that the experimenter had used a 25!1 design instead. Set up the 25!1 design in a split-plot, using the principal fraction. Then select the response data using the information from the full factorial.

Analyze the data and draw conclusions. Do they agree with the results of Problem 14.26?

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Stan Run A = dard Num-Pres- B Gas Order ber sure Power Flow Type C= D = E= y Gas Paper Contact Type Angle 5 21 2 18 10 26 14 30 12345678 -1 -1 +1 Oxygen El 37.6 -1 -1 +1 Oxygen E2 43.5 +1 -1 -I Oxygen El 41.2 +1 -1 -I Oxygen E2 38.2 +1 -1 -1 SiC14 56.8 +1 -1