Answer:
The probability that exactly one photo detector of a pair is acceptable is .
Step-by-step explanation:
Let the A = first photo detector is acceptable and B = second photo detector is acceptable .
The information provided is:
- The law of total probability states that:
Using the law of total probability determine the probability of B as follows:
- The addition rule of probability is:
Compute the probability that exactly one photo detector of a pair is acceptable using the addition rule of probability as follows:
Thus, the probability that exactly one photo detector of a pair is acceptable is .