An Investigation of the CaCO3-CaF2-K2SiO3- SiO2-Fe flux system usingthe Submerged Arc Welding Process on HSLA-100 and AISI-1081 Steelswas conducted in a series of experiments. In this investigation, the weldingfluxes with differing chemical compositions were prepared. Several weldsusing each flux were made on AISI-1018 steel base metal. The ANOVAresults of hardness measurements (in Brinell scale) of five welds using eachof four fluxes are presented in Table 2.Table 2: ANOVA of hardness measurementsSource of df Sum of squaresMean ofvariation(SS)FluxErrorTotal316191023.6608.3squares(MS)(1) Complete the ANOVA table in Table Q2(a)Fo(ii) By using a = 0.05, can we conclude that the flux types have significantinfluence on the Brinell hardness? Prove your answer.

(i) The objective is to complete the ANOVA table:

Answered: An Investigation of the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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According to the ACT Profile Report-National, the ACT composite scores are normally distributed with µ=21.0 and σ=5.4. Many charter schools receive funding from the state government without providing accountability measures as required by the public schools. A sample of 36 high school seniors is randomly selected from charter schools. Their average ACT composite score is 19.8. Is the average ACT composite score of seniors from charter schools lower than 21.0 assuming α=0.05?
3
#6.3 (p.344). Conduct a test of H0: μ1>= μ2-2.3 versus Ha: μ1< μ2-2.3 for the sample data summarized here. Use α=0.01 in reaching your conclusions.
The article “Magma Interaction Processes Inferred from Fe-Ti Oxide Compositions in the Dölek and Sariçiçek Plutons, Eastern Turkey” (O. Karsli, F. Aydin, et al., Turkish Journal of Earth Sciences, 2008:297–315) presents chemical compositions (in weight-percent) for several rock specimens. Fourteen specimens (two outliers were removed) of limenite grain had an average iron oxide (Fe2O3) content of 9.30 with a standard deviation of 2.71, and seven specimens of limenite lamella had an average iron oxide content of 9.47 with a standard deviation of 2.22. Can you conclude that the mean iron oxide content differs between limenite grain and limenite lamella?
In an experiment to compare the tensile strengths of I = 6 different types of copper wire, J = 5 samples of each type vwere used. The between-samples and within-samples estimates of o were computed as MSTT = 2677.3 and MSE = 1131.2, respectively. Use the F test at level 0.05 to test Ho: 41 = 42 = ...= H6 versus H: at least two uj's are unequal. Calculate the test statistic. (Round your answer to two decimal places.) f=
Assume the SLR model: Y = 100+ 3x + epsilon, with sigma = 5 For X = 2, find the Z-score for Y = 128 (Show 1 decimal place.)
An experiment to determine the effect of four different types of engine oil (A, B, C, and D) on the rolling friction coefficient of a car speed has been conducted. Three brands of car (Honda, Toyota, and Mazda) were chosen, and each engine oil was tested twice on each car, producing the following ANOVA output in Figure 2. i) How many treatments involved? Write down all the treatments ii) Identify the number of replication for each treatment. iii) Based on the ANOVA table above, find the values of W, X, Y and Z. iv) Test the interaction effect on rolling friction coefficient of car speed between the four different types of engine oil and the three different brands of car. v) Do we need to test for marginal effect? Give a reason.
A selected, inbred rat strain had a tail measuring an average of 5.4 cm. An inbred, wild caught strain had 6.2 cm long tails. The selected and wild caught strains were crossed producing the F1 and F2 below. Generation Progeny Phenotype F1 20 5.8 cm F2 250 5 to 6.6 cm a) Assume that 4 genes control tail length. What is the average contribution per allele in the F2 generation? b) What proportion of the F2 would have tails 6 cm in length? c) Which of the following best describes the PARENTAL rat strains? AAbbCCDD x aaBBccdd AABBCCDD x aabbccdd AABBccdd x aabbCCDD d) How many offspring (approximately) in the F2 would have 5 cm long tails?
A manufacturer is evaluating the variation in thickness for piezoelectric actuators from two component suppliers. The two populations are independent, and the thickness measurements are normally distributed. The thickness was measured for a sample of 30 products purchased from Supplier 1, and it was found that = 3.8048 . A sample of 30 products was also purchased from Supplier 2 and it was found that 5.2967. S1 S2 Is there evidence at the 0.1 level of significance that the thickness variance for Supplier 1 is smaller than for Supplier 2? (Round answers to 3 decimal places as needed) The correct alternative hypothesis is: O H1:0 + 0 OH1: H1 > µ2 : O H1:0} < o? O H1:0 2 0 O H1:0 O H1: µ1 2 l2 O H1: 41 < µ2 The test statistic is Fobs The probability of variance ratios at or beyond Fobs occurring by chance is = The decision is to Select an answer v that the variance in The correct summary would be: Select an answer thickness for Supplier 1 is smaller than Supplier 2.
Given the following information: P(A) = 0.4, P(B) = 0.3, P(C)= 0.5, P(AOB)= 0.12, P(BOC)= 0.13, P(AnC) = 0.11, P(A^BoC)=0.05. The value of P((Bn©)|Ā) is 20 13 15 41 49 41 60
16) Unfortunately, arsenic occurs naturally in some ground water (Reference: Union Carbide Technical Report K/UR-1). A A mean arsenic level of u = 80 norta 11: safe for agriculturo1
3. An experiment is conducted to measure the flex (amount of bending) in a thin composite beam when placed under a known load (force). Smaller beams made of the same material will then be used as springs to protect electronics. The manufacturer needs the beam to flex on average 5.0 mm, with 95 % of all samples having a flex between 4.7 mm and 5.3 mm. After testing the flex of 20 samples, the following numbers are found: (d) (e) 20 (f) (g) i=1 Each sample has the flex measured to the nearest 0.1 mm using electronic calipers. (a) What is the mean flex found using 20 samples? What is the sample standard deviation of flex four using 20 samples? What is the 95% confidence interval for an individual sample? (Not true mean this time!) That is, in what range would we expect the flex of 95 % of the samples to be found? x₁ = 102.2 mm 20 Σχι" = 523.7 mm2 Xi i=1 Does the set of samples used satisfy the desired failure rate? Explain the reasoning behind your answer. What percent difference is there…

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