If the probability that a baby born in a certain hospital will speak in the next day is 1/4, what is the probability that at least 2 babies out of a cluster of 5 babies will speak tomorrow?
Thanks!!!!
The probability that 2 babies will speak tomorrow is C(5,2) · (1/4)2 · (3/4)3
3 C(5,3) · (1/4)3 · (3/4)2
4 C(5,4) · (1/4)4 · (3/4)1
5 C(5,5) · (1/4)5 · (3/4)0
Find the answer to each of the above and add them together.
+753 
