Open the sample data, WrinkleResistance.MTW.The chemist performs a multiple regression analysis to fit a model with the predictors and eliminate the predictors that do not have a statistically significant relationship with the response. The durable press rating, a measure of wrinkle resistance, is recorded for each piece of cotton. The chemist examines 32 pieces of cotton cellulose produced at different settings of curing time, curing temperature, formaldehyde concentration, and catalyst ratio. A research chemist wants to understand how several predictors are associated with the wrinkle resistance of cotton cloth.
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