P(B|A) means "the probability of B given A", which in turn means: how likely is B, if we are guaranteed that A is true?
In your case, this means: if you already know that the person has a sister, how likely it is that the same person also has a brother?
if you look the diagram, you see that 4 people has a sister: Davis, Kari, Chu, Evan. Out of these 4 people, 2 of them also have a brother.
This explains P(B|A)=0.5: half of the people with a sister also have a brother.
Answer:
9
Step-by-step explanation:
8 times 9 is 72
80 times 9 is 720
720 divided by 9 is 80
The difference in the dogs weight from 2 years ago is -0.83
Answer:
Step-by-step explanation:
So, after the nail set is bought, she will have 80-16 left, that is 64. If each pair of earrings costs 8 dollars, then she can buy 64/8 =8: She can buy 8 pairs of earrings.
I don't see how you can make an "inequality" with this.
If the question is interpreted that she doesn't spend all her money, then we could say, if we must that if y=number of earrings she can buy then
y≤8