The engineering department at a steel mill is studying the tensile strength of a particular grade of steel when fabricated at various pressures (Factor A) and temperatures (Factor B). The accompanying ANOVA table shows a portion of the results from conducting a two-way ANOVA test with interaction. a-1. Construct an ANOVA table. (Round intermediate calculations to at least 4 decimal places. Round "SS" to 2 decimal places, "MS" to 4 decimal places and "F" to 3 decimal places.) ANOVA Source of Variation | SS | df | MS | F | p-value Sample (B, temperature) | 150.22 | 1 | 150.2200 | | 0.034 Columns (A, pressure) | | | 62.0600 | | 0.135 Interaction | 24.11 | 2 | 12.0550 | | 0.641 Within | | | 26.1108 | | Total | 174.33 | 3 | | | a-2. How many levels did pressure have? Number of levels | 3 b. How many observations were run for each combination of pressure-temperature settings? Number of observations | 10
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