Experimental Probability Quick Check

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Question
A quality controller inspected 1,000 units of a product and rejected 150 units due to defects. Approximate the empirical probability that a unit will pass the inspection.(1 point)
Responses

0.15%
0.15%

17/20

1.5%
1.5%

320

1 answer

The empirical probability that a unit will pass the inspection can be calculated by dividing the number of units that passed by the total number of units inspected:

Total units = 1000
Defective units = 150

Units that passed = 1000 - 150 = 850

Empirical probability of passing = 850/1000 = 0.85

Therefore, the probability is 85% or 0.85. So the closest option is 1.5%.