# PROB

posted by
**Lauren**
.

Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 36% chance of becoming myopic before they turn 16. Children who sleep in darkness have a 21% chance of becoming myopic before they turn 16. A survey indicates that 28% of children under 2 sleep with some light on. If a randomly selected child under 16 is myopic, what is the probability that he/she slept with the light on before they turned 2?