Explain and provide an example of the conditional probability formula, addition rule of probability, and multiplication rule.

Mathematics

1 answer:

Liono4ka [1.6K]2 years ago

4 0

Answer:

P(A ∪ B) = P (A) + P(B) – P(A ∩ B)

Step-by-step explanation:

Conditional probability: p(A|B) is the probability of event A occurring, given that event B occurs. For example, given that you drew a red card, what's the probability that it's a four (p(four|red))=2/26=1/13. So out of the 26 red cards (given a red card), there are two fours so 2/26=1/13.

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What is the product of Three-fourths and Negative StartFraction 6 over 7 EndFraction? -9/14

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Answer:

The product is : $-\frac{9}{14}$

Step-by-step explanation:

First term given to us is = $\frac{3}{4}$

Second term given to us = $-\frac{6}{7}$

We have to find product for term 1 and term 2

Which means that we have to find : $(\frac{3}{4})\cdot(-\frac{6}{7})$

Calculating the product of fraction is pretty simple. To calculate the product of any two fractions. We have to multiple the numerator of 1st term with numerator of 2nd which serves as the the numerator of the product. Similarly we have to multiply denominator with denominator.

$(\frac{3}{4})\cdot(-\frac{6}{7}) = \frac{3\cdot(-6)}{4\cdot7} = -\frac{18}{28}$