To find the probability of selecting a defective computer randomly from the total daily output, we need to first calculate the overall number of defective computers produced in a day.
From the given information:
Number of defective computers from Britain: 100 * 4% = 4
Number of defective computers from Germany: 120 * 3% = 3.6 (rounded to 4 for practical purposes)
Number of defective computers from China: 180 * 2% = 3.6 (rounded to 4 for practical purposes)
Number of defective computers from the USA: 300 * 1% = 3
Total number of defective computers = 4 + 4 + 4 + 3 = 15
Total number of computers produced daily = 100 + 120 + 180 + 300 = 700
Probability of selecting a defective computer = Number of defective computers / Total number of computers
Probability = 15 / 700
Probability = 0.0214
Therefore, the probability of selecting a defective computer randomly from the total daily output is approximately 0.0214.
