Using test data on 20 types of laundry detergent an
Using test data on 20 types of laundry detergent, an analyst fitted a regression to predict Cost- PerLoad (average cost per load in cents per load) using binary predictors TopLoad (1 if washer is a top-loading model, 0 otherwise) and Powder (if detergent was in powder form, 0 otherwise). Interpret the results. (Data are from Consumer Reports 68, no. 8 [November 2003], Laundry p. 42.)
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