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Sphinxa [80]
3 years ago
8

How are a common denominator and a common multiple alike and diferent

Mathematics
2 answers:
marin [14]3 years ago
6 0

Answer:

To find a common denominator of two fractions, you have to find a number that both denominators of the given fractions will divide into. And to find a common multiple, you have to find a number that both given numbers will divide into.

Step-by-step explanation:

docker41 [41]3 years ago
3 0

Answer:

To find a common denominator of two fractions, you have to find a number that both denominators of the given fractions will divide into. And to find a common multiple, you have to find a number that both given numbers will divide into.

Step-by-step explanation:

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The length of a parking lot is 5 yards more than the width. If the area of the parking lot is 104 square yards, find the dimensi
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6 0
3 years ago
Social Sciences Alcohol Abstinence The Harvard School of Public Health completed a study on alcohol consumption on college campu
Scilla [17]

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?

P = P_{1} + P_{2}

P_{1} 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:

P_{1} = 0.047*0.207 = 0.009729

P_{2} 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:

P_{2} = 0.953*0.06 = 0.05718

So, the probability of a randomly selected female student abstaining from alcohol is:

P = P_{1} + P_{2} = 0.009729 + 0.05718 = 0.0669

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:

P = \frac{P(B).P(A/B)}{P(A)}

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:

P(B) is the probability of a woman from a coeducational college being chosen. So P(B) = 0.953

P(A/B) is the probability of a woman abstaining from alcohol, given that she attends a coeducational college. So P(A/B) = 0.06

P(A) is the probability of a woman abstaining from alcohol. From a), P(A) = 0.0669

So, the probability that a randomly selected female student attends a coeducational college, given that she abstains from alcohol is:

P = \frac{P(B).P(A/B)}{P(A)} = \frac{(0.953)*(0.06)}{(0.0669)} = 0.8287

If a randomly selected female student abstains from alcohol, there is a 82.87% probability that she attends a coeducational college.

4 0
3 years ago
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