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Valentin [98]
3 years ago
10

According to the general equation for conditional probability, if P(A^B)= 2/3 and P(B)= 3/4, what is P(A|B)?

Mathematics
2 answers:
stellarik [79]3 years ago
5 0

Answer:

C)P(A|B) =  \frac{8}{9}.

Step-by-step explanation:

Given :  P(A^B)= 2/3 and P(B)= 3/4.

TO find :  what is P(A|B).

Solution : We have given that  P(A^B)= 2/3 and P(B)= 3/4.

By the conditional probability :

P(A|B) = \frac{P(A\ and\ B)}{P(B)}.

Plugging the values

P(A|B) =  \frac{P(A\ and\ B)}{P(B)}.

P(A|B) = \frac{\frac{2}{3}}{\frac{3}{4}}.

P(A|B) =  \frac{8}{9}.

Therefore, C)P(A|B) =  \frac{8}{9}.

Kryger [21]3 years ago
4 0
C. 8/9 because if you do 2/3 divided by 3/4 then that gives you 8/9.
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The regression equation Credits = 17.9 − 0.09 Work was estimated from a sample of 21 statistics students. Credits is the number
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Answer:

Step-by-step explanation:

Hello!

Given the regression equation

Credit= 17.9 - 0.09 Work

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Y: number of college credits taken

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The estimation for the slope is -0.09

As you see the estimated slope is negative, this means that the association between the two variables is indirect or inverse. Meaning, when the number of Work increases, the number of Credit decreases. (negative regression)

The correct option is: "An increase in the number of hours worked per week decreases the expected number of credits."

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By replacing the value in the equation: Credit= 17.9 - 0.09 * 0= 17.9

If Work=60, you replace it in the equation and:

Credit= 17.9 - 0.09 Work= 17.9-0.09*60= 12.5

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