# Question

An estimated regression for a random sample of observations on an assembly line is Defects = 3.2 + 0.045 Speed, where Defects is the number of defects per million parts and Speed is the number of units produced per hour. The estimated standard error is se = 1.07. Suppose that 100 units per hour are produced and the actual (observed) defect rate is Defects = 4.4.

(a) Calculate the predicted Defects.

(b) Calculate the residual.

(c) Standardize the residual using se.

(d) Is this observation an outlier?

(a) Calculate the predicted Defects.

(b) Calculate the residual.

(c) Standardize the residual using se.

(d) Is this observation an outlier?

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