If the probability that a baby born in a certain hospital will speak in the next day is 1/3, what is the probability that at least 2 babies out of a cluster of 5 babies will speak tomorrow?
The probability is 47/243.
Here is a similar question answered here:
https://web2.0calc.com/questions/if-the-probability-that-a-baby-born-in-a-certain#r1
