The sample space of an experiment is changed when some additional information pertaining to the outcome of the experiment is received. The effect of such information is to <u><em>reduce</em></u><em> </em>the sample space by excluding some outcomes as being impossible which before receiving the information were believed possible . The probabilities associated with such a <u><em>reduced</em></u> sample space are called conditional probabilities.
<u><em>Knowing a student’s grade level does not help determine if he or she uses social media.</em></u>
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The given survey explains the conditional probability.
The students of the<u><em> reduced</em></u> sample space i.e. of 9th grade have the probability of 81% who use the social media.
The students of 8th grade that use social media can be greater or less than 81%.
Therefore this experiment <u><em>does not</em></u> help determine if he or she uses social media on the basis of his/her grade.
Only the <u><em>last option </em></u>is correct.
The conditional probability can be understood by the following.
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Answer:
40%
Step-by-step explanation:
6 divided by 15 times 100 = 40
Answer:
x: (6,0)
y: (0,-2)
Step-by-step explanation:
To find the x-intercept, substitute in 0 for y and solve for x
. To find the y intercept, substitute in 0 for x and solve for y
.
Ex -
X : 2x -6(0)=12
2x=12
2 cancels out with 2
12/2 = 6
Y: 2(0 )- 6y =12
-6y=12
negative 6 times negative 6 cancels
12/-6 = -2
Answer:
The scale factor in the dilation of a mathematical object determines how much larger or smaller the image will be (compared to the original object).
Answer:
GCF is 4ab
And the expression will be: 4ab ( 3a^2+2ab-5b^2)
Step-by-step explanation:
Factor the GCF :
12a^3b + 8a^2b^2-20 ab^3
We need to find the common terms that are common in each of the term given above
12,8 and 2 are all divisible by 4
a is common in all terms and b is also common in all terms,
So, GCF is 4ab
Taking 4ab common
12a^3b + 8a^2b^2-20 ab^3=4ab ( 3a^2+2ab-5b^2)
