In a mass manufacturing facility of superconducting quantum interference devices (SQUIDs), approximately 0.024% of the microchips produced fail the initial low-temperature calibration test. Among the chips that fail, 3 out of 8 failures are due to Josephson junction degradation, while the remaining failures are due to flux trap contamination.
A production run yields a batch of 2.5 × 107 microchips.
Which of the following is the best estimate for the number of microchips in this batch that failed due to flux trap contamination?
2,2502,2502,250
3,7503,7503,750
6,0006,0006,000
37,50037,50037,500
45 exam-style questions on OCR A A Level Biology Analysis. Each one has a worked solution and a mark scheme showing where the marks go.