Elementary Surveying: An Introduction to Geomatics Plus Mastering Engineering with Pearson eText -- Access Card Package (15th Edition)
15th Edition
ISBN: 9780134654171
Author: Charles D. Ghilani
Publisher: PEARSON
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Chapter 3, Problem 3.22P
i.
To determine
Total length and standard deviation.
ii.
To determine
Total length and standard deviation.
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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: 320.2 409.5 311.0 326.5 316.8 349.8 309.7
6: 401.1 347.2 361.0 404.5 331.0 348.9 381.7
8: 395.4 366.2 351.0 357.1 409.9 367.3 382.0
10: 356.7 452.9 461.4 433.1 410.6 384.2 362.6
12: 415.4 441.8 419.9 410.7 473.4 441.2 465.8
USE SALT
Does variation in plate length have any effect on true average axial stiffness? State the relevant hypotheses using analysis of variance.
O Ho M1 M2 M3 = μ4=μ5
Ha
all five μ's are unequal
Ho: M1 M2 M3 #44 #μ5
Ha all five μ's are equal
Ho: M₁ μ2 43 #44 #μ5
H₁: at least two μ,'s are equal
O Ho M1 M2 M3 = μ4=μ5
Ha at least two μ's are unequal
Test 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.)
Degrees of Sum of Mean
Source
Squares
Squares
f
freedom
Treatments
Error…
1-Define a cartesion system 2 identify the structure's supports and the type of structure (2D) or 3D 3-If the structure has more than one element dismember the structure and draw free body diagram(show all actions and reactions) on each element independently 4- Determine the type of suports 5- show the unkown supports reactions with any assumed direction but you cannot change the assumed force direction once you dicede 6-In a common joint, you can dicide on the force direction in one element, however, in the other one you need to follow the Newton'ns 3rd law and shoe the opposite direction 7- if you have multiple actions forces in the system, find force components for each foce independently use Sin/Cos/Tan functions to find forces components in two perpendicular directions 8- Add forces in each direction since they are paralled forces Rx=fx Ry=fy Rz= fy
Physical properties of six flame-retardant fabric samples were investigated in an article. Use the accompanying data and a 0.05 significance level to determine whether a linear relationship exists between stiffness x (mg-cm) and thickness y (mm).
x
y
8.08 24.33 12.39 6.99 23.97 35.64
0.25 0.68 0.30 0.28 0.82 0.57
State the appropriate null and alternative hypotheses.
○ Ho: p = 0
H₂: pO
○ Hop = 0
Hap #0
Compute the value of the sample correlation coefficient, r. Round your answer to four decimal places.
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.)
P-value =
State the conclusion in the problem context.
O Fail to reject Ho. The data indicates that the population correlation coefficient differs from 0.
Fail to reject Ho. The data does not indicate that the population correlation coefficient differs from 0.
Reject Ho. The data indicates that the population correlation coefficient differs…
Chapter 3 Solutions
Elementary Surveying: An Introduction to Geomatics Plus Mastering Engineering with Pearson eText -- Access Card Package (15th Edition)
Ch. 3 - Discuss the differences between an error and a...Ch. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Prob. 3.4PCh. 3 - Discuss the diffexrence between accuracy and...Ch. 3 - Prob. 3.6PCh. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - Prob. 3.10P
Ch. 3 - Prob. 3.11PCh. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - Prob. 3.14PCh. 3 - 23°3fi'fififi, 23°30'1EH], 23"30'100, and...Ch. 3 - Prob. 3.16PCh. 3 - Prob. 3.17PCh. 3 - Prob. 3.18PCh. 3 - Prob. 3.19PCh. 3 - Prob. 3.20PCh. 3 - Prob. 3.21PCh. 3 - Prob. 3.22PCh. 3 - Line AD is observed in three secwknns, AB, BC, and...Ch. 3 - Prob. 3.24PCh. 3 - Prob. 3.25PCh. 3 - Prob. 3.26PCh. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.30P
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