QUESTION 4 (25 marks) a) In a fish cracker manufacturing in Kuala Terengganu, twenty-five fish cracker packs are tested for 15 hours. At the end of the test, three parts had failed at 2 hours, 5 hours, and 6 hours respectively. i) Determine the failure rate. ii) Determine the reliability at 80 hours with a mean time between failures (MTBF) of 125 hours and there is a constant failure rate. (2) (2) b) As a Quality Engineer in a fish cracker manufacturing factory in Kuala Terengganu, you are tasked to check the package drop test of four different weights of fish crackers packed in a carton box packing using a carton drop test machine. Based on the following data in Table Q4(b) and using experimental design, use the level a = 0.10 and a = 0.05 to determine if the test is significant with reference to tables in Appendix. (21) Table Q4(b) The result of carton packing at various weights vs drop height Carton Packing Drop Height (cm) Weight (kg) 10 123 122 119 120 20 128 140 131 30 124 123 120 115 40 119 121 120 118 126 QUESTION 4 (25 marks) a) In a fish cracker manufacturing in Kuala Terengganu, twenty-five fish cracker packs are tested for 15 hours. At the end of the test, three parts had failed at 2 hours, 5 hours, and 6 hours respectively. i) Determine the failure rate. ii) Determine the reliability at 80 hours with a mean time between failures (MTBF) of 125 hours and there is a constant failure rate. (2) (2) b) As a Quality Engineer in a fish cracker manufacturing factory in Kuala Terengganu, you are tasked to check the package drop test of four different weights of fish crackers packed in a carton box packing using a carton drop test machine. Based on the following data in Table Q4(b) and using experimental design, use the level a = 0.10 and a = 0.05 to determine if the test is significant with reference to tables in Appendix. (21) Table Q4(b) The result of carton packing at various weights vs drop height Carton Packing Drop Height (cm) Weight (kg) 10 123 122 119 120 20 128 140 131 30 124 123 120 115 40 119 121 120 118 126