Events & Promotions
|
|
GMAT 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.
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
30 May 2024, 15:36
Kudos
Bookmarks
Both swan and heron: 0.07
Neither swan nor heron: 0.52
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
72% (01:51) correct
28%
(02:13)
wrong
based on 1409
sessions
History
Date
Time
Result
Not Attempted Yet
For a randomly selected day, the probability that a visitor to a certain pond will see at least one swan is 0.35. The probability that a visitor to that pond on a randomly selected day will see at least one heron is 0.2. Furthermore, seeing a swan and seeing a heron are independent of each other.
Based on the information provided, select Both swan and heron for the probability that a visitor to the pond will see both at least one swan and at least one heron on any given day, and select Neither swan nor heron for the probability that a visitor to the pond will see neither a swan nor a heron on any given day. Make only two selections, one in each column.
Based on the information provided, select Both swan and heron for the probability that a visitor to the pond will see both at least one swan and at least one heron on any given day, and select Neither swan nor heron for the probability that a visitor to the pond will see neither a swan nor a heron on any given day. Make only two selections, one in each column.
ID: 101096
| Both swan and heron | Neither swan nor heron | |
| 0.02 | ||
| 0.07 | ||
| 0.48 | ||
| 0.52 | ||
| 0.70 |
ShowHide Answer
Official Answer
Both swan and heron: 0.07
Neither swan nor heron: 0.52
30 May 2024, 18:33
Kudos
Bookmarks
Both swan AND heron = .2 * .35 = .07
Since the probability of seeing a swan is .35, the probability of not seeing a swan is 1-.35= .65.
Likewise, the probability of not seeing a heron is 1-.2= .8
So, not swan AND not heron is .65 * .8 = .52
Posted from my mobile device
Since the probability of seeing a swan is .35, the probability of not seeing a swan is 1-.35= .65.
Likewise, the probability of not seeing a heron is 1-.2= .8
So, not swan AND not heron is .65 * .8 = .52
Posted from my mobile device
02 Jun 2024, 10:41
Kudos
Bookmarks
Probability for independent events is - P(A)xP(B)
So, for both events to occur - .2x.35 = .07
for neither of the event to occur = .8x.65 = .52
So, for both events to occur - .2x.35 = .07
for neither of the event to occur = .8x.65 = .52
