Publications by Author 1
Midterm
1 4. Two-Sample T-Test (with VST) (By Ajala, Ponmile - Kininge, Rucha - Tejada, Omar ) [DESCRIPTION] 1.1 Assumptions [ TBD ] \[ x+\frac{1}{2}=\gamma_1 \] 2 Example [This is where we state the problem, and repeat the steps we mentioned above] We use ANOVA model to predict variance and normality using the Residuals vs Fitted plot #Question b ...
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Assignment 12 Group 4
1 Question 1: Is this a valid Latin Square? (explain) Yes, it is a valid Latin Square since all letters appears in each row and each column. 2 Question 2: Write the model equation Linear effect equation: \[ Y_{ijk}=\mu+\tau_{i}+\beta_{j}+\alpha_{k}+\epsilon_{ijk} \] Where, µ = Grand Mean τi = Treatment effect βj = Block-1 effect αk = Bloc...
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Flip Assignment 11 Group 4
1 1. RCBD Assignment Linear effect equation: \[ _{Yij=\mu +\tau _{i}+\beta _{j}+\epsilon _{ij}} \] Null hypotheses = \(H_{0}:\mu_{ 1}=\mu_{ 2}=\mu_{ 3}=\mu_{ 4}\) Alternative Hypotheses = Atleast one mu differs Question 1: Chemical <- c(rep(1,5),rep(2,5),rep(3,5),rep(4,5)) Bolt <- rep(seq(1,5),4) Obs <- c(73,68,74,71,67,73,67,75,72,70,75,68,78...
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HomeworkWeek6
1 Question 3.23 The effective life of insulating fluids at an accelerated load of 35 kV is being studied. Test data have been obtained for four types of fluids. The results from a completely randomized experiment were as follows: Is there any indication that the fluids differ? Use α=0.05 Which fluid would you select, given that the objective ...
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Assignment 10
1 Assignment Description VST and Kruskal-Wallace Assignment A civil engineer is interested in determining whether four different methods of estimating flood flow frequency produce equivalent estimates of peak discharge when applied to the same watershed. Each procedure is used six times on the watershed, and the resulting discharge data (in cu...
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Document
1 a) Write the linear effects equation and the hypothesis you are testing: Linear effect equation: $$x_{ij}= \mu _{u}+\tau _{i}+\varepsilon _{ij}$$ Null hypotheses = \(H_{0}:\mu_{ 1}=\mu_{ 2}=\mu_{ 3}=\mu_{ 4}=\mu_{ 5}=\mu_{ 6}\) Alternative Hypotheses = Atleast one mu differs Does it appear the data is normally distributed? Does it appear that ...
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HomeworkWeek5
1 Question 3.7 The tensile strength of Portland cement is being studied. Four different mixing techniques can be used economically. A completely randomized experiment was conducted and the following data were collected: Use the Fisher LSD method with α 0.05 to make comparisons between pairs of means. Construct a normal probability plot of the...
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Assignment 9
1 Assignment#9 Questions Do the following assignment in R. Upload a link to an html page and a pdf of your answers in Blackboard 1. Suppose we wish to design a new experiment that tests for a significant difference between the mean effective life of these 4 insulating fluids at an accelerated load of 35kV. The variance of fluid l...
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Document
1 1. Question 1 1.1 1.a Sample size to detect 1hr difference between mean lives of the fluids Using the power.anova.test to find the sample size: power.anova.test(groups = 4, n = NULL, between.var = 1, within.var = 4.5, sig.level = 0.05, power = 0.8) ## ## Balanced one-way analysis of variance power calculation ## ## groups = ...
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Flipped Assignment 5
1 Flipped Assignment 5 dat<-readRDS("/Users/cjcurry/Downloads/FairTraders_Receipts_and_StorageBins.rds") str(dat) ## 'data.frame': 6275201 obs. of 15 variables: ## $ ItemNo : num 1101010 1101010 1101010 1101010 1101010 ... ## $ Date.x : POSIXct, format: "2011-01-12" "2011-01-12" ... ## $ SourceType : chr "Supplier Order" "Supplier ...
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