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dimulka [17.4K]
3 years ago
14

When you do this seemingly simple problem, what is the answer you get?

Mathematics
2 answers:
bagirrra123 [75]3 years ago
8 0
Well, you would have to use, "PEMDAS", (Parentheses, Exponents, Multiplication, Division, Addition, & Subtraction), which are the order of operations to go by.
So first, we do the stuff in parentheses, we'll do 1 + 2 which = 3, and the parentheses around it will = to multiplying 3 times the answer of 6 divided by 2.
So since on the order of operations Addition & Subtraction, and Multiplication & Division could go from any order they appear on in the problem, we'll NOW do 6 divided by 2 which equals 3, times the three from above, which will = 9, so your <span>final answer is 9. =)
</span>I hope I helped! =D



s344n2d4d5 [400]3 years ago
3 0
The answer is 9  becuase 6 divide by 2 is 3 and 3 plus 2 plus 1 equals 9. hope it jelped

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Assume that we have two events, A and B, that are mutually exclusive. Assume further that we know P(A) = 0.3 and P(B) = 0.7. If
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Answer:

See below

Step-by-step explanation:

What is P(A B)?

If A and B are mutually exclusive, then  

P(AB) = P(A∩B) = P(∅) = 0

What is P(A | B)?

By definition  

<em>P(A | B) =  P(A∩B)/P(B). </em>

Since  

P(A∩B) = 0, then P(A | B) = 0

Is P(A | B) equal to P(A)?

No, because P(A | B) = 0 and P(A) = 0.3

Are events A and B dependent or independent?

A and B would be independent if

P(A | B) = P(A) and P(B | A) = P(B)

But both P(A |B) and P(B | A) equals 0 and P(A) = 0.3, P(B) = 0.7

Hence, <em>A and B are dependent. </em>

A student in statistics argues that the concepts of mutually exclusive events and independent events are really the same, and that if events are mutually exclusive they must be independent. Is this statement accurate?

No, it is not.

As we already saw, A and B are mutually exclusive but they are not independent.

What general conclusion would you make about mutually exclusive and independent events given the results of this problem?

If A and B are not empty events which are mutually exclusive, they can never be independent.

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