Could someone just show me how to do it? i don't want the answer just an example of how to do it
1 answer:
Calculating radicals can be difficult if they don't work out. To calculate a radical that doesn't work out, you can estimate by finding which two perfect square roots it lies between. You can also use a calculator.
An alternative solution, using properties of square roots is where
Using this, we can create . This is between the perfect square 9 and 16 (3 and 4).
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Answer:
0.64 = 64% probability that the student passes both subjects.
0.86 = 86% probability that the student passes at least one of the two subjects
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Passing subject A
Event B: Passing subject B
The probability of passing subject A is 0.8.
This means that
If you have passed subject A, the probability of passing subject B is 0.8.
This means that
Find the probability that the student passes both subjects?
This is . So
0.64 = 64% probability that the student passes both subjects.
Find the probability that the student passes at least one of the two subjects
This is:
Considering , we have that:
0.86 = 86% probability that the student passes at least one of the two subjects