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07 Nov 2019, 01:46
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
72% (03:28) correct
28%
(03:46)
wrong
based on 354
sessions
History
Date
Time
Result
Not Attempted Yet
In a survey of 348 employees, 104 of them are uninsured, 54 work part time, and 12.5 percent of employees who are uninsured work part time. If a person is to be randomly selected from those surveyed, what is the probability that the person will neither work part time nor be uninsured?
(A) 7/12
(B) 8/41
(C) 9/348
(D) 1/8
(E) 41/91
Are You Up For the Challenge: 700 Level Questions
(A) 7/12
(B) 8/41
(C) 9/348
(D) 1/8
(E) 41/91
Are You Up For the Challenge: 700 Level Questions
07 Nov 2019, 09:40
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Bunuel
solve usin 2x2 matrix
---- uninsured---insured---total
PT---13----------41------54
FT----91---------203-----294
total---104--------244-----348
probability that the person will neither work part time nor be uninsured = 203/348 = 7/12
IMO A
chrtpmdr
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Joined: 24 Jul 2019
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Schools: HSG MBF "23 (A) UniBocconi MFin "23 (A)
GMAT 1: 730 Q46 V45
GPA: 3.9
09 Nov 2019, 03:23
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Question adressed to the experts:
If you arrive at the 203 / 348 term at the end, do you check the answer choices first or do you immediately cancel the fraction down to it's smallest possible form?
In this case the answer choices were spread so far apart that only two would need a closer consideration, but even (E) can be eliminated as we can see pretty quickly that 203 / 348 > 1/2 whereas 41/91 < 1/2.
Is this how you do it generally or do you prefer to cancel down just to stay sharp and fast for questions in which the answer choices are really close to each other?
If you arrive at the 203 / 348 term at the end, do you check the answer choices first or do you immediately cancel the fraction down to it's smallest possible form?
In this case the answer choices were spread so far apart that only two would need a closer consideration, but even (E) can be eliminated as we can see pretty quickly that 203 / 348 > 1/2 whereas 41/91 < 1/2.
Is this how you do it generally or do you prefer to cancel down just to stay sharp and fast for questions in which the answer choices are really close to each other?
