On average, one out of every 2,000 babies born in the US have cystic fibrosis. What percentage of the above population has cystic fibrosis?

0.05%

Explanation:

Cystic fibrosis is a genetic disease that results in the body producing thick, and sticky mucus which is abnormal.

From the question, we are informed that 1 out of every 2,000 babies born in the US have cystic fibrosis, the percentage of the above population that has cystic fibrosis will be:

= 1/2000 × 100

= 0.05%