Packet 9: Bonus 19
Lusser’s law applies when the modes of this process are statistically independent. For 10 points each:
[10m] A high rate of what phenomenon occurs in a “burn-in” phase? FMEA analyzes the modes of this process, whose “mean time between” is often used to quantify reliability.
ANSWER: failure [accept mean time between failure or failure mode and effects analysis]
[10e] This auto company pioneered the 8D methodology to help with failure modes and effects analysis. It also increased reliability by pioneering the assembly line.
ANSWER: Ford Motor Company
[10h] The failure rate of devices can be plotted using these visualizations, whose “burn-in” and “wear-out” regions show the higher rate of early and late failure compared to failure in the middle of the lifespan.
ANSWER: bathtub curve
<BC, Other Science (Engineering)> | NAFTA-Packet-9
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 28 | 17.50 | 96% | 43% | 36% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Maybe Ever | WashU | 0 | 10 | 0 | 10 | E |
| The Worst Trade Deal in the History of Trade Deals | Lex | 10 | 10 | 10 | 30 | MEH |
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| 2026 NAFTA at Stanford | 01/17/2026 | ✓ | 4 | 25.00 | 100% | 100% | 50% |
| 2025 NAFTA Online | 02/14/2026 | ✓ | 2 | 20.00 | 100% | 50% | 50% |
| 2026 NAFTA at Vanderbilt | 02/14/2026 | ✓ | 2 | 10.00 | 100% | 0% | 0% |
| 2025 NAFTA at Toronto | 09/13/2025 | ✓ | 3 | 13.33 | 100% | 0% | 33% |
| 2025 NAFTA at Maryland | 09/27/2025 | ✓ | 3 | 10.00 | 100% | 0% | 0% |
| 2025 NAFTA at Harvard | 10/04/2025 | ✓ | 2 | 20.00 | 100% | 50% | 50% |
| 2025 NAFTA at Oxford | 10/11/2025 | ✓ | 3 | 16.67 | 100% | 33% | 33% |
| 2025 NAFTA at Chicago | 11/08/2025 | ✓ | 5 | 20.00 | 100% | 60% | 40% |
| 2025 NAFTA at Columbia | 11/08/2025 | ✓ | 3 | 20.00 | 67% | 67% | 67% |
| 2025 NAFTA at Richmond | 12/20/2025 | ✓ | 1 | 10.00 | 100% | 0% | 0% |