Probability of the next six babies being a girl = (0.4810)^6 = 0.0124
Therefore probability of at least one boy in next six births = 1 - 0.0124
= 0.9876 Answer
When you distribute you should get
Simplify to get
Answer 2 is correct
B is the correct answer. When you see > which mean the line is go to the right side < is go to the left side.
Hope this helps!
You could make a small (easily repaired) leak and watch it for the amount of time you need to conclude what you need to.
I would say 200,00 because if you see it like a roller coaster
down 1234
up 6789
Hope I helped ;-)