2х + Зу = -2 Зх – бу = 18
1 answer:
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Answer:
a. 0.51
Step-by-step explanation:
We solve this problem building the Venn's diagram of these probabilities.
I am going to say that:
A is the probability that a men is smart.
B is the probability that a men is funny.
C is the probability that a mean is neither of those.
We have that:
In which a is the probability that a men is smart but not funny and is the probability that a men is both of these things.
By the same logic, we have that:
The sum of the probabilities is decimal 1, so:
.
We want to find C. We find the values of each of these probabilities, starting from the intersection.
16% are both smart and funny. This means that
33% are funny. This means that . So
.
32% are smart. This means that . So
.
Now we find C
.
The correct answer is:
a. 0.51