1. The following table is obtained from yield stress measurements for samples treated with either saline (NaCl) or phosphate ion (NalHPO-l) solution or Potassium Sulfate {K2504}! Each is performed at three temperatures (25' 32. 37 C]. The number of replicates for each combination is 4. The available data is provided below. The engineer wants to know if the chemical treatment. temperature, or their interaction has signicant effect on the yield' Sums of Squares with the appropriate mean Source of Variation Treatment chemical 2000 Temperature 160 Treatment * temperature Error or Residual 7100 Total 9800