Question: Use the normal probability plot given in Figure 12.9 resulting from a single-factor analysis of variance with four treatments to check the normality assumption. Is

Use the normal probability plot given in Figure 12.9 resulting from a single-factor analysis of variance with four treatments to check the normality assumption. Is it reasonable to assume that the error term is normally distributed? Explain.

Percent 99 95 90 80 70 60 50 RODDON DE 40 30

Percent 99 95 90 80 70 60 50 RODDON DE 40 30 20 10 5 -7.5 -5.0 -2.5 0.0 2.5 5.0 Residual

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