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Section 19, question 16, 1000DS

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by isisalaska » Sun Jan 28, 2007 4:57 pm
16. What is the probability that events A and B both occur?
(1) The probability that event A occurs is 0.8.
(2) The probability that event B occurs is 0.6.

Why is E?
I though the rule is to multiply both probabilities when you want both events to occur
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Source: — Data Sufficiency |
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by jayhawk2001 » Sun Jan 28, 2007 9:26 pm
The answer is P(A) * P(B) only when A and B are independent events.

From the question, we cannot assume that A and B are independent.
Hence E.
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by isisalaska » Mon Jan 29, 2007 6:57 am
Ah tricky :x
Thansk jayhawk2001
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by dunkin77 » Thu May 31, 2007 3:33 am
Sorry to re-open the thread..


It sounds to me P(A and P(B are both independent...but what kind of phrase or word will be needed to make P(A and P(B independent?

Thank you!
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