Question

\fState the appropriate test statistic to two decimal places. E State the conclusion in the problem context. 0 Reject Hg. The model is not useful. 0 Reject Hg. The model is useful. 0 Fail to reject H0. The model is not useful. 0 Fail to reject H0. The model is useful. (b) Calculate a 95% confidence interval for 32, the population regression coefcient of x2. (Round your answers to three decimal places. Hint: df : n(k+1)) Interpret the confidence interval. 0 Holding both factors fixed, we estimate that the average change in temperature difference on the die surface will fall within this interval. 0 Holding die close time fixed, we estimate that the average change in temperature difference on the die surface will fall within this interval. 0 Holding furnace temperature fixed, we estimate that the average change in temperature difference on the die surface will fall within this interval. 0 We estimate that the average change in temperature difference on the die surface will fall within this interval