Answer:
Empirical Probability that a family's first child will be born with this syndrome is 0.0002.
Explanation:
Empirical Probability of an event E is defined

Let E: Event that the child born has a certain syndrome.
Now here, total number of times experiments performed = 50,000
The number of favorable outcome = 1

Hence, here the Empirical Probability that a family's first child will be born with this syndrome is 0.0002.