Consider the following data from a two-factor factorial experiment. Analyze the data and draw conclusions. Perform a test for nonadditivity. Use ???? = 0.05.

Column Factor Row Factor 1 2 3 4 1 36 39 36 32 2 18 20 22 20 3 30 37 33 34 5.21 The shear strength of an adhesive is thought to be affected by the application pressure and temperature.

A factorial experiment is performed in which both factors are assumed to be fixed. Analyze the data and draw conclusions.

Perform a test for nonadditivity.

Temperature (∘F)

Pressure (lb/in2) 250 260 270 120 9.60 11.28 9.00 130 9.69 10.10 9.57 140 8.43 11.01 9.03 150 9.98 10.44 9.80