Description In an industrial laboratory, under uniform conditions, batches of electrical insulating fluid were subjected to constant voltages until the insulating property of the fluids broke down. Seven differen voltage levels were studied and the measured reponses were the times until breakdown. Some R code to help you get started. library('Sleuth3') ?case0802 head(case0802) model = Im(Time~Voltage,data = case0802)

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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In an industrial laboratory, under uniform conditions, batches of electrical insulating fluid were
subjected to constant voltages until the insulating property of the fluids broke down. Seven different
voltage levels were studied and the measured reponses were the times until breakdown.
Some R code to help you get started.
library('Sleuth3')
?case0802
head(case0802)
model = Im(Time~Voltage,data = case0802)
summary(model)#Prints information about the model
plot(model, which=c(1))
hist(model$residuals)
Answer the following questions to the best of you ability and select all that apply.
It is reasonable to assume that observations are independent.
A histogram of the residuals shows that the assumption of normality is likely true.
Observations are not independent
According to the model a voltage of 10 kV will result in a failure time of 134667 minutes
A histogram of the residuals shows that the assumption of normality is likely false.
According to the model a voltage of 10 kV will result in a failure time of 1346.67 minutes
Transcribed Image Text:Description In an industrial laboratory, under uniform conditions, batches of electrical insulating fluid were subjected to constant voltages until the insulating property of the fluids broke down. Seven different voltage levels were studied and the measured reponses were the times until breakdown. Some R code to help you get started. library('Sleuth3') ?case0802 head(case0802) model = Im(Time~Voltage,data = case0802) summary(model)#Prints information about the model plot(model, which=c(1)) hist(model$residuals) Answer the following questions to the best of you ability and select all that apply. It is reasonable to assume that observations are independent. A histogram of the residuals shows that the assumption of normality is likely true. Observations are not independent According to the model a voltage of 10 kV will result in a failure time of 134667 minutes A histogram of the residuals shows that the assumption of normality is likely false. According to the model a voltage of 10 kV will result in a failure time of 1346.67 minutes
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