One of the current senior design multidisciplinary teams is developing a polymer hybrid manufacturing system, which combines additive and subtractive manufacturing processes to create complex parts for clients like NASA. Cost is always a concern, and the team suspects that several factors will impact the energy consumption to run the system to make one part, including material type, number of coding lines in programming the shape, and time. The team is interested in comparing system time to create the same parts using material A versus material B. The team creates 10 parts using material A and records the time. The team repeats the process but using material B. What is the most appropriate analysis to see if the times are different between materials? Question 8 Select one: a. T-test, unknown and unequal variances b. T-test, paired test c. F-test d. Simple linear regression