Question: Question 5. ( 20 pts.) A development engineer is interested in determining if the cotton weight percentage in a synthetic fiber affects tensile strength. She

Question 5. ( 20 pts.) A development engineer is

Question 5. ( 20 pts.) A development engineer is interested in determining if the cotton weight percentage in a synthetic fiber affects tensile strength. She ran a completely randomized experiment with five levels of cotton weight percentage and five replicates. The experiment results are shown in the table below. Perform an ANOVA analysis to answer the question of whether or not the cotton weight percentage affects the tensile strength. Conduct the residuals analysis to verify if the ANOVA assumptions are valid. Use a=0.05. Observed Tensile Strenght (Ib/in2)

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