The article "Influence of Age on Masonry Bond Strength and Mortar Microstructure" (H. Sugo, A. Page, and S. Lawrence, Can J Civ Eng, 2007:1433-1442) investigates the effect of age on tensile strength of mortar. Several specimens of various ages were loaded until failure, and the maximum load (in MPa) was recorded for each. The results are presented in the following table.

a. Construct an ANOVA table. You may give a range for the P-value.
b. Can you conclude that there are differences among the mean maximum loads?

Transcribed Image Text:

Age (days) Maximum load (MPa) 28 90 180 365 1.69, 1.69, 1.97, 2.09,.8.1.53, 1.63, 1.70, 1.73, 1.72, 148, 1.15 1.82, 1.86, 1.72, 1.73, 1.70, 144, 2.00, 1.78, 1.47, 132, 1.87, 1.57 2.76, 2.60, 2.38, 2.06, 1.81, 2.76, 2.41, 2.29, 2.00, 2.15, 0.97, .91, 2.26 1.18, 1.46, 2.02, 2.16, 1.79, 1.74, 2.08, 1.99, 1.63, 195, 1.66, 2.34 2.60, 2.28, 2.42, 2.66, 2.24, 2.53, 1.66, 2.33, 2.02, 2.28, 2.18, 2.27, 2.24, 1.8, 1.93 2.16, 151,2.44, 2.13, 2.0, 2.00, 2.09, 2.18, 2.48, 1.99, 2.15, 2.14, 1.56, 1.94, 1.75