To approximate the empirical probability that a unit will pass inspection, we can use the formula:
\[ P(\text{pass}) = \frac{\text{number of units that pass}}{\text{total number of units}} \]
In this case:
- Total units inspected = 1,000
- Units rejected (due to defects) = 150
- Units that pass = 1,000 - 150 = 850
Now, we can calculate the probability:
\[ P(\text{pass}) = \frac{850}{1000} = 0.85 \]
To express this as a percentage, we multiply by 100:
\[ P(\text{pass}) \times 100 = 0.85 \times 100 = 85% \]
So, the probability that a unit will pass inspection is approximately 85%. However, none of the options you listed matches this value.
If you’re looking for a fraction representation of the passing rate:
\[ \frac{850}{1000} = \frac{17}{20} \]
Thus, the correct answer from the responses you provided is:
Start Fraction 17 over 20 End Fraction.