# Thread: Can anybody solve the conditional probability mentioned below

1. ## Can anybody solve the conditional probability mentioned below

In a recent survey of college students, students where asked about their use of the Internet for research. The information was displayed in the table below. Let A be the event that the student was a business major. Let B be the event that the student uses the Internet for research.
Use Internet for research Don’t Use Internet
Education Students 0.25 0.15

1)Which of the following is true?
A) P(A | B) < P(B | A).
B) P(A | ) > P(B | ).
C) P(A B) = 0.85.
D) Events A and B are statistically independent.

2)Which of the following is true?
A) P(A | B) = 0.81
B) P(A ) = 0.16
C) Events A and B are statistically independent.
D) D) P( | ) = 0.375

2. Originally Posted by sgk1980
In a recent survey of college students, students where asked about their use of the Internet for research. The information was displayed in the table below. Let A be the event that the student was a business major. Let B be the event that the student uses the Internet for research.

Code:
	            Use Internet for research  Don’t Use Internet
Education Students	0.25	                0.15

1)Which of the following is true?
A) P(A | B) < P(B | A).
For P(A|B) we are using the first column of the table, so:

P(A|B)=0.38/(0.38+0.25)

For P(B|A) we use the first row of the table so:

P(B|A)=...

CB

3. Hi Giordano Bruno ,thanks for your reply.sorry I did n't check the options while copying & pasting. now I gave all the options with full details .can you please help me out in solving these 2 problems.

24. Which of the following is true?

A)P(A | B< P(B | A).
_ _

B)P(A | B) > P(B | A).
C)P(A|B) = 0.85.
D)Events A and B are statistically independent.

25. Which of the following is true?
A)P(A | B) = 0.81
_

B)P(A | B) = 0.16
C)Events A and B are statistically independent.

_ _
D) P(B | A) = 0.375

4. Hi Giordano Bruno ,thanks for your reply.sorry I did n't check the options while copying & pasting. now I gave all the options with full details .can you please help me out in solving these 2 problems.

24. Which of the following is true?

A)P(A | B< P(B | A).
B)P(A | B complement) > P(B | A complement).
C)P(A|B) = 0.85.
D)Events A and B are statistically independent.

25. Which of the following is true?
A)P(A | B) = 0.81

B)P(A | B complement) = 0.16
C)Events A and B are statistically independent.

D) P(B complement| A complement) = 0.375