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A study of the properties of metal plate-connected trusses used for roof support yielded the following...
A study of the properties of metal plate-connected trusses used for roof support yielded the following...
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: 302.2 409.5 311.0 326.5 316.8 349.8 309.7 6: 412.1 347.2 361.0 404.5 331.0 348.9 381.7 8: 386.4 366.2 351.0 357.1 409.9 367.3 382.0 10: 364.7 452.9 461.4 433.1 410.6 384.2 362.6 12: 416.4 441.8 419.9 410.7 473.4 441.2 465.8 1. Does variation in plate length have any...
Answer i 8. A stu dy of the properties of metal plate-connected trusses used for roof support "Mo...
1
Answer i 8. A stu dy 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: 39-44) yielded the following observations on axial-stiffness in lengths 4, 6, 8, 10, and 12 in: dex (kips/in.) for plate 4: 309.2 409.5 311.0 326.5 404.5 316.8 331.0 409.9 410.6 349.8 348.9 367.3 384.2 309.7 381.7 382.0 362.6 12: 407.4 441.8 419.9 410.7 473.4 441.2 465.8 402.1 3472361.0 8: 392.4...
An experiment was carried out to investigate the effect of species (factor A, with I =...
An experiment was carried out to investigate the effect of species (factor A, with I = 4) and grade (factor B, with ) = 3) on breaking strength of wood specimens. One observation was made for each species-grade combination-resulting in SSA = 444.0, SSB = 423.6, and SSE = 127.4. Assume that an additive model is appropriate. (a) Test Ho: a = a 2 = az = Q 4 = 0 (no differences in true average strength due to species)...
2. [-/10 Points] DETAILS DEVORESTAT9 10.E.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The lumen output...
2. [-/10 Points] DETAILS DEVORESTAT9 10.E.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The lumen output was determined for each of I = 3 different brands of lightbulbs having the same wattage, with J = 7 bulbs of each brand tested. The sums of squares were computed as SSE = 4776.4 and SST = 598.4. State the hypotheses of interest (including word definitions of parameters). u; = sample average lumen output for brand i bulbs Ho: M1 = ll2 =...
1. The lumen output was determined for each of I = 3 different brands of lightbulbs having the sa...
1. The lumen output was determined for each of I = 3 different brands of lightbulbs having the same wattage, with J = 8 bulbs of each brand tested. The sums of squares were computed as SSE = 4775.1 and SSTr = 590.8. State the hypotheses of interest (including word definitions of parameters). A) μi = true average lumen output for brand i bulbs H0: μ1 = μ2 = μ3 Ha: at least two μi's are unequal B) μi =...
An experiment was carried out to investigate the effect of species (factor A, with I =...
An experiment was carried out to investigate the effect of species (factor A, with I = 4) and grade (factor B, with ) = 3) on breaking strength of wood specimens. One observation was made for each species-grade combination-resulting in SSA = 443.0, SSB = 428.6, and SSE = 122.4. Assume that an additive model is appropriate. (a) Test Ho: a1 = a2 = 03 = 24 = 0 (no differences in true average strength due to species) versus Ha:...
An experiment was carried out to investigate the effect of species (factor A, with I =...
An experiment was carried out to investigate the effect of species (factor A, with I = 4) and grade (factor B, with J = 3) on breaking strength of wood specimens. One observation was made for each species—grade combination—resulting in SSA = 445.0, SSB = 429.6, and SSE = 124.4. Assume that an additive model is appropriate. (a) Test H0: α1 = α2 = α3 = α4 = 0 (no differences in true average strength due to species) versus Ha:...
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity...
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity level here refers to electrical conductivity (EC), where the chosen levels were EC = 1.6, 3.8, 6.0, and 10.2 nmhos/cm. (Use i = 1, 2, 3, and 4 respectively.) 1.6: 59.7 53.5 56.2 63.7 58.8 3.8: 55.9 59.1 52.3 54.2 6.0: 51.3 48.8 53.6 48.5 10.2: 44.6 48.9 41.0 47.1 46.8 Use the F test at level a = 0.05 to test for any...
The number of miles of useful tread wear (in 1000s) was determined for tires of each of five diff...
11.1
The number of miles of useful tread wear (in 1000s) was determined for tires of each of five different makes of subcompact car (factor A, with 5) in combination with each of four different brands of radial tires factor B, with -4 resulting in = 20 observations. The values SSA 30 9 SSB 44.3, and 592 were then computed. Assume that an additive mode appropriate. (a) Test Ho: αι = a 2 = α3 α4-as-0 (no differences in true...
1. In an experiment to compare the tensile strengths of 1 - 6 different types of...
1. In an experiment to compare the tensile strengths of 1 - 6 different types of copper wire, ) = 5 samples of each type were used. The between-samples and within samples estimates of a were computed as MSTR = 2649.3 and MSE - 1169.2, respectively. Use the F test at level 0.05 to test Ho: H1 12 - ... - versus Ha: at least two wi's are unequal Calculate the test statistic (Round your answer to two decimal places.)...
1
Answer i 8. A stu dy 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: 39-44) yielded the following observations on axial-stiffness in lengths 4, 6, 8, 10, and 12 in: dex (kips/in.) for plate 4: 309.2 409.5 311.0 326.5 404.5 316.8 331.0 409.9 410.6 349.8 348.9 367.3 384.2 309.7 381.7 382.0 362.6 12: 407.4 441.8 419.9 410.7 473.4 441.2 465.8 402.1 3472361.0 8: 392.4...
An experiment was carried out to investigate the effect of species (factor A, with I = 4) and grade (factor B, with ) = 3) on breaking strength of wood specimens. One observation was made for each species-grade combination-resulting in SSA = 444.0, SSB = 423.6, and SSE = 127.4. Assume that an additive model is appropriate. (a) Test Ho: a = a 2 = az = Q 4 = 0 (no differences in true average strength due to species)...
2. [-/10 Points] DETAILS DEVORESTAT9 10.E.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The lumen output was determined for each of I = 3 different brands of lightbulbs having the same wattage, with J = 7 bulbs of each brand tested. The sums of squares were computed as SSE = 4776.4 and SST = 598.4. State the hypotheses of interest (including word definitions of parameters). u; = sample average lumen output for brand i bulbs Ho: M1 = ll2 =...
An experiment was carried out to investigate the effect of species (factor A, with I = 4) and grade (factor B, with ) = 3) on breaking strength of wood specimens. One observation was made for each species-grade combination-resulting in SSA = 443.0, SSB = 428.6, and SSE = 122.4. Assume that an additive model is appropriate. (a) Test Ho: a1 = a2 = 03 = 24 = 0 (no differences in true average strength due to species) versus Ha:...
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity level here refers to electrical conductivity (EC), where the chosen levels were EC = 1.6, 3.8, 6.0, and 10.2 nmhos/cm. (Use i = 1, 2, 3, and 4 respectively.) 1.6: 59.7 53.5 56.2 63.7 58.8 3.8: 55.9 59.1 52.3 54.2 6.0: 51.3 48.8 53.6 48.5 10.2: 44.6 48.9 41.0 47.1 46.8 Use the F test at level a = 0.05 to test for any...
11.1
The number of miles of useful tread wear (in 1000s) was determined for tires of each of five different makes of subcompact car (factor A, with 5) in combination with each of four different brands of radial tires factor B, with -4 resulting in = 20 observations. The values SSA 30 9 SSB 44.3, and 592 were then computed. Assume that an additive mode appropriate. (a) Test Ho: αι = a 2 = α3 α4-as-0 (no differences in true...
1. In an experiment to compare the tensile strengths of 1 - 6 different types of copper wire, ) = 5 samples of each type were used. The between-samples and within samples estimates of a were computed as MSTR = 2649.3 and MSE - 1169.2, respectively. Use the F test at level 0.05 to test Ho: H1 12 - ... - versus Ha: at least two wi's are unequal Calculate the test statistic (Round your answer to two decimal places.)...
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