Question

The Jones family was one of the first to come to the U.S. They had 9 children. Assuming that the

probability of a child being a girl is .5, find the probability that the Jones family had:
at least 7 girls?
at most 8 girls?

Answer 1

At least 7 girls: 0.5^7 OR 0.0078125

At least 8 girls: 0.5^8 OR 0.00390625