A study of the properties of metal plate-connected trusses used for roof support yielded the following observations on axial stiffness index (kips/in.) for plate lengths 4, 6, 8, 10, and 12 in:4: 321.2 409.5 311.0 326.5 316.8 349.8 309.76: 439.1 347.2 361.0 404.5 331.0 348.9 381.78: 390.4 366.2 351.0 357.1 409.9 367.3 382.010: 362.7 452.9 461.4 433.1 410.6 384.2 362.612: 402.4 441.8 419.9 410.7 473.4 441.2 465.8USE SALTDoes variation in plate length have any effect on true average axial stiffness? State the relevant hypotheses using analysis of variance.○ Ho: H₁ = H₂ = H3 = H4=H5Ha: all five u's are unequalO Ho: H₁ H₂ H3 H4 H5Ha: all five μ's are equalHo H₁ = ₂ = 3 = H4 = 5H₂: at least two μ's are unequalHo: H₁ H₂ H3 H4 H5Ha: at least two μ's are equalTest the relevant hypotheses using analysis of variance with a = 0.01. Display your results in an ANOVA table. (Round your answers to two decimal places.)MeanDegrees of Sum offreedom Squares SquaresSourceTreatmentsErrorTotalGive the test statistic. (Round your answer to two decimal places.)f=What can be said about the P-value for the test?OP-value > 0.100

Denote μ1, μ2, μ3, μ4, and μ5 as the true mean stiffness index for plate lengths 4, 6, 8, 1, and 12…

Answered: A study of the properties of metal…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The article "Effect of Microstructure and Weathering on the Strength Anisotropy of Porous Rhyolite" (Y. Matsukura, K. Hashizume, and C. Oguchi, Engineering Geology, 2002:39- 17) investigates the relationship between the angle betwween cleavage and flow structure and the strength of porous rhyolite. Strengths (in MPa) were measured for a mumber of specimens cut at various angles. The mean and standard deviation of the strengths for each angle are presented in the following table. Angle Mean 0° 22.9 Sample Size Standard Deviation 2.98 12 15° 22.9 1.16 30° 19.7 3.00 45° 14.9 2.99 60° 13.5 2.33 75° 11.9 2.10 90 14.3 3.95 6. Can you conclude that strength varies with the angle?
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