Mathematics, 13.10.2020 03:01 yaya6940
An automotive supplier is considering changing its electrical wire harness to save money. The idea is to replace a current 20-gauge wire with a 22-gauge wire. Since not all wires in the harness can be changed, the new wire must work with the current wire splice process. To determine whether the new wire is compatible, random samples were selected and measured with a pull test. A pull test measures the force required to pull the spliced wires apart. The minimum pull force required by the customer is 20 pounds. Twenty observations of the forces needed for the curent wire are 22.7 24.6 24.7 23.7 23.7 23.5 25.8 25.1 20.3 21.4 28.6 23.9 23.7 22.8 25.3 24.8 22.8 24.1 24.7 24.5 Twenty observations of the forces needed for the new wire are 11.2 12.2 13.0 12.5 10.2 12.2 15.2 16.7 11.4 15.5 11.8 11.7 12.5 12.3 14.9 9.9 12.3 11.8 13.2 14.9 a. Does the current wire meet the customer's specifications? Use an appropriate confidence interval with 95% confidence level in explaining your justification. b. Find a 90% confidence interval for the difference of the means for these two sets of wire. c. What is your recommendation for this company?
Answers: 3
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An automotive supplier is considering changing its electrical wire harness to save money. The idea i...
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