The following data are values of pressure (psi) in a torsion spring for several settings of the angle between the legs of the spring in a free position. Compute a one-way analysis of variance for this experiment and state your conclusion concerning the effect of angle on the pressure in the spring. (C. R. Hicks, Fundamental Concepts in the Design of Experiments, Holt, Rinehart and Winston, New York,1973)

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Angle () 67 75 71 79 83 87 | 89 | 90 87 87 88 84 85 85 86 86 83 85 90 90 91 92 88 88 88 88 89 87 90