A Data from an Experiment to Assess the Effects of Vibration

question 53

Essay

A data from an experiment to assess the effects of vibration (A), temperature cycling (B), altitude cycling (C), and temperature for altitude cycling and firing (D) on thrust duration are shown below. Use the Yates method to obtain sums of squares and the ANOVA table. Then assume that three- and four-factor interactions are absent, pool the corresponding sums of squares to obtain an estimate of $\sigma ^ { 2 }$ and test all appropriated hypotheses at level .05.

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