Refer to Copier maintenance Problem 120 Assume that linear regression through the origin model 410 is appropriate

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Refer to Copier maintenance Problem 120 Assume that linear regression through the origin model 410 is appropriate a Obtain the estimated regression function b Estimate 1 with a 90 percent confidence Interpret your interval estimate c Predict the service time on a new call in which six copiers are to be serviced Use a 90 percent predic