A. find the probability of getting exactly 6 girls in 8 births. b. find the probability of getting 6 or more girls in 8 births. c. which probability is relevant for determining whether 6 is a significantly girls in 8 births: the result from part (a) or part (b)

Assuming each birth can give life to a boy or girl with equal chance, then the probability of having a girl is

The probability of having exactly six girls is given by Bernoulli rule:

As for the second point, let's compute the probabilty of having zero, one or two boys, which is the same of having six or more girls, but requires less calculations:

which simplifies to

Finally, I am not sure of what you mean with the point c, so please clarify the question.

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)

what chart am i supposed to follow?