If 2+2 is 4 than what is 10+10
2 answers:
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Step-by-step explanation:
—x intercept, y = 0
y = 1/2 x + 2
0 = 1/2 x + 2
-2 = 1/2 x
-2.2 = x
-4 = x
X intercept = (-4 , 0)
—y intercept, x = 0
y = 1/2 x + 2
y = 1/2 . 0 + 2
y = 0 + 2
y = 2
Y intercept = (0 , 2)
Graph in the picture :)
Answer:
a) There is a 6.69% probability that a randomly selected female student abstains from alcohol.
b) If a randomly selected female student abstains from alcohol, there is a 82.87% probability that she attends a coeducational college.
Step-by-step explanation:
This is a probability problem:
We have these following probabilities:
-20.7% of a woman attending an all-women college abstaining from alcohol.
-6% of a woman attending a coeducational college abstaining from alcohol.
-4.7% of a woman attending an all-women college
- 100%-4.7% = 95.3% of a woman attending a coeducational college.
(a) What is the probability that a randomly selected female student abstains from alcohol?
is the probability of a woman attending an all-women college being chosen and abstaining from alcohol. There is a 0.047 probability of a woman attending an all-women college being chosen and a 0.207 probability that she abstain from alcohol. So:
is the probability of a woman attending a coeducational college being chosen and abstaining from alcohol. There is a 0.953 probability of a woman attending a coeducational college being chosen and a 0.06 probability that she abstain from alcohol. So:
So, the probability of a randomly selected female student abstaining from alcohol is:
There is a 6.69% probability that a randomly selected female student abstains from alcohol.
(b) If a randomly selected female student abstains from alcohol, what is the probability she attends a coedücational colege?
<em>This can be formulated as the following problem:</em>
<em>What is the probability of B happening, knowing that A has happened.</em>
Here:
<em>What is the probability of a woman attending a coeducational college, knowing that she abstains from alcohol.</em>
It can be calculated by the following formula:
Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.
We have the following probabilities:
is the probability of a woman from a coeducational college being chosen. So
is the probability of a woman abstaining from alcohol, given that she attends a coeducational college. So
is the probability of a woman abstaining from alcohol. From a),
So, the probability that a randomly selected female student attends a coeducational college, given that she abstains from alcohol is:
If a randomly selected female student abstains from alcohol, there is a 82.87% probability that she attends a coeducational college.