Answer Happy

B)
A study is made of the effect of curing temperature on the compressive strength of a certain type of concrete. Five concrete specimens are cured at each of four temperatures, and the compressive strength of each specimen is measured (in MPa). The results are as follows: Temperature Strengths 0 31.2 29.6 30.8 30.0 31.4 10 30.0 27.7 31.1 31.3 30.6 20 31.4 32.3 30.5 30.1 32 30 33.8 32.5 31.6 33.9 (°C) 33 Construct an ANOVA table. DF SS MS F 0.01 <P<0.05 V Source Temperature Error Total

To assess the effect of piston ring type and oil type on piston ring wear, three types of piston ring and four types of oll were studied. Three replications of an experiment, in which the number of milligrams of material lost from the ring in four hours of running was measured, were carried out for each of the 12 combinations of oil type and piston ring type. With oil type as the row effect and piston ring type as the column effect, the following sums of squares were observed: SSA = 1.0926, SSB = 0.9340, SSAB -0.2485, SSE=17034 Is it plausible that the main effects of piston ring type are all equal to 0? Provide the value of the test statistic and the P.value. The test statistic is