GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Event X and event Y are independent. The probability of even
[#permalink]
24 Oct 2017, 01:05
24 Oct 2017, 01:05
2
1
3
Bookmarks
00:00
Question Stats:
70% (00:56) correct
29% (00:54) wrong based on 117 sessions
Hide Show timer Statistics
Event X and event Y are independent. The probability of event X is 40%. The probability of events X and Y both occurring is 16%.
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for correct solution.
Quantity A |
Quantity B |
The probability of X occurring |
The probability of Y occurring |
A. The quantity in Column A is greater
B. The quantity in Column B is greater
C. The two quantities are equal
D. The relationship cannot be determined from the information given
Kudos for correct solution.
Re: Event X and event Y are independent. The probability of even
[#permalink]
25 Oct 2017, 07:50
25 Oct 2017, 07:50
1
1
Bookmarks
Since the two events are independent, the probability of the intersection (both events happening) is equal to the product of the individual probabilities, i.e. \(P(X&Y) = P(X)P(Y)\). Substituting we get \(0.16 = 0.4*P(Y)\), from which we get P(Y) = 0.4. Then P(X) = P(Y).
Answer C
Answer C
Re: Event X and event Y are independent. The probability of even
[#permalink]
10 Oct 2018, 22:01
10 Oct 2018, 22:01
Answer C
