See this, replace 12 by 20, and 0.1 (or 10%) by 0.2 (or 20%) therein.
RonL
hi there.
An insurance company has life policies on twenty 80 year old women. Studies show that the probability that an 80 year old woman will die in a particular year is 0.2. For these women over the coming year, what is
a)the probability distribution of the number of women who will die
b)the probability that at least two women will die?
c)the most likely number of women who will die?
look forward for an answer many thanks for the help guys really appreciate