Answer: A study of the properties of metal plate-connected
Chapter 10, Problem 10.8(choose chapter or problem)
A study of the properties of metal plate-connected trusses used for roof support (Modeling Joints Made with Light-Gauge Metal Connector Plates, Forest Products J., 1979: 3944) yielded the following observations on axial stiffness index (kips/in.) for plate lengths 4, 6, 8, 10, and 12 in: 4: 309.2 409.5 311.0 326.5 316.8 349.8 309.7 6: 402.1 347.2 361.0 404.5 331.0 348.9 381.7 8: 392.4 366.2 351.0 357.1 409.9 367.3 382.0 10: 346.7 452.9 461.4 433.1 410.6 384.2 362.6 12: 407.4 441.8 419.9 410.7 473.4 441.2 465.8 Does variation in plate length have any effect on true average axial stiffness? State and test the relevant hypotheses using analysis of variance with .01. Display your results in an ANOVA table. [Hint: x 2 ij 5,241, 420.79.]
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