Instructor: Hello students.
Now we are here with 2 D.
And the D is asking us what is the probability
that a child is hyperlipidemic
if both parents are hyperlipidemic?
So the problem here has conditions attached
to both the numerator and the denominator.
And here we are looking
for both parents being hyperlipidemic.
So given that you probably have figured we are going
to be focusing on the first column, and again,
I'm going to use a different color so it's easy
for us to understand what's going on.
Why don't I use blue this time?
So here the numerator is going to be 45
because we are looking for children who are hyperlipidemic.
So the numerator is 45 and then we are looking
for the denominator where basically both parents
are hyperlipidemic.
So that, as you can see, is going to be, again, 58.
But I'm going to again, use a different color
so we can see this nicely.
So this is going to be our denominator.
That's going to be 58.
So now let's write the problem and see how we are going
to solve it.
So the problem here is going to be the probability
that the child is hyperlipidemic
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if both parents
are hyperlipidemic.
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So that will be 45 divided by 58.
And when we do that division,
what we get is 0.776, which is 77.6%.
So basically what does that mean?
That means that there is a 77.6% probability
that a child is hyperlipidemic
if both parents are hyperlipidemic.