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Suppose you work for a winter coat company, and want to create a multiple-variable regression model to estimate the cost of new coat designs. You choose the predictor variables "the amount of material required", "the labour hours required", and "the number of designs used" in the production of coats. After examine the cost of 27 of the previous coat varieties your company has made, you find the following information, summarized in a table below: 5E(C0effl 26-91 Requ'fed . 5.01 2.83 materials (units) Required labour 3.19 5,241 (hours) deSIgns Using this information with a 5% significance level, select the correct answer. When necessary, round your answers to three decimal places. O Using this model, a coat using 5.5 units of materials, 2.1 hours of labour, and 2 different designs would have a cost of $203.65. O The degree of freedom associated with the critical value in this test would be equal toiz. 771. O The "Required labour" predictor variable is not significant in this model. O The "Required materials" is not significant in this model. 0 The "Number of Designs" predictor variable is not significant