1. An experiment was performed to investigate the effectiveness of five insulating materials. Four samples of each material were tested at an elevated voltage level to accelerate the time to failure. The failure times (in minutes) is shown below. Material Failure Time (minutes) 110 157174178 18 880 1256 52764355 495 7040 5307 9050 29 a. Do all five materials have the same effect on mean failure time? Use a 5% significance level. i. State the hypotheses, ii. What is the decision? ili. Make conclusions. b. Analyze the residuals from this experiment. Are the basic analysis of variance assumptions satisfied? i. State the hypotheses, ii. What are the decisions? ili. Make conclusions. c. Conduct another analysis with a transformation of the failure time data and draw the appropriate conclusions Based on your answer on part (b) and the residual versus fit plot. d. Use Kruskal Wallis test to analyze the failure time data and draw conclusions. State the hypotheses, What is the value of the test statistic? i. ii. v. What is the decision? v. Make 1. An experiment was performed to investigate the effectiveness of five insulating materials. Four samples of each material were tested at an elevated voltage level to accelerate the time to failure. The failure times (in minutes) is shown below. Material Failure Time (minutes) 110 157174178 18 880 1256 52764355 495 7040 5307 9050 29 a. Do all five materials have the same effect on mean failure time? Use a 5% significance level. i. State the hypotheses, ii. What is the decision? ili. Make conclusions. b. Analyze the residuals from this experiment. Are the basic analysis of variance assumptions satisfied? i. State the hypotheses, ii. What are the decisions? ili. Make conclusions. c. Conduct another analysis with a transformation of the failure time data and draw the appropriate conclusions Based on your answer on part (b) and the residual versus fit plot. d. Use Kruskal Wallis test to analyze the failure time data and draw conclusions. State the hypotheses, What is the value of the test statistic? i. ii. v. What is the decision? v. Make