Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

Dole County

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 142
Joined: Sun Jun 12, 2011 7:55 amFollowed by: 3 members
Thanked: 5 times
by metallicafan » Sun Apr 01, 2012 4:10 pm
A recent survey of all auto accident victims in Dole County found that, of the severely injured drivers and front-seat passengers, 80 percent were not wearing seat belts at the time of their accidents. This indicates that, by wearing seat belts, drivers and front-seat passengers can greatly reduce their risk of being severely injured if they are in an auto accident.
The conclusion above is not properly drawn unless which of the following is true?

(A) Of all the drivers and front-seat passengers in the survey, more than 20 percent were wearing seat belts at the time of their accidents.
(B) Considerably more than 20 percent of drivers and front-seat passengers in Dole County always wear seat belts when traveling by car.
(C) More drivers and front-seat passengers in the survey than rear-seat passengers were very severely injured.
(D) More than half of the drivers and front-seat passengers in the survey were not wearing seat belts at the time of their accidents.
(E) Most of the auto accidents reported to police in Dole County do not involve any serious injury.

OA: _A_
Top
Join the discussion
Source: — Critical Reasoning |
Legendary Member
Posts: 581
Joined: Sun Apr 03, 2011 7:53 amFollowed by: 5 members
Thanked: 52 times

by killer1387 » Sun Apr 01, 2012 5:08 pm
A goes the best
Top
Join the discussion
User avatar
GMAT Instructor
Posts: 1248
Joined: Thu Mar 29, 2012 2:57 pmFollowed by: 192 members
Location: Everywhere
Thanked: 503 times
GMAT Score:780

by Bill@VeritasPrep » Sun Apr 01, 2012 8:13 pm
Premise: 80% of severe front-seat injuries were not wearing seatbelts at the time of the accidents.
Conclusion: Wearing seat belts greatly reduces the risk of severe front-seat injuries.

A. If more than 20% were wearing seatbelts, then they had fewer severe injuries than you would expect based on population. Let's use 30% as a figure to see what I mean:

30% seatbelts = 20% injuries
70% no seatbelts = 80% injuries

We can see that seatbelt use leads to a smaller percentage of severe injuries than would be otherwise expected.

B. We only care about seatbelt use at the time of the accident.

C. Rear-seat passengers are irrelevant.

D. We only care about accidents that resulted in severe injuries.

E. As in D, accidents without serious injuries are not part of the argument.
Join Veritas Prep’s 2010 Instructor of the Year, Matt Douglas for GMATT Mondays

Visit the Veritas Prep Blog

Try the FREE Veritas Prep Practice Test
Top
Join the discussion
Legendary Member
Posts: 1404
Joined: Tue May 20, 2008 6:55 pmFollowed by: 2 members
Thanked: 18 times

by tanviet » Mon Apr 02, 2012 5:54 am
This is hardest question and I do not think it is from gmatprep or og books

I meet this question many times and each time I can not do it.

the following is the only way we can understand this question.

make a tale

LAP SEATBELT KHONG LAP SEATBELT
SEVERE 2 8 10

NOT SEVERE >20
Top
Join the discussion
Legendary Member
Posts: 1404
Joined: Tue May 20, 2008 6:55 pmFollowed by: 2 members
Thanked: 18 times

by tanviet » Mon Apr 02, 2012 6:02 am
SORY, I post again.

make a table like this

SEATBELT NO SEATBELT

SEVERE 2 8 10 (total severely injured)
NOT SEVERE
>20 (total seatbelt) 100 (total)

supose there are total 100, and 10 of them are severely injured.

above table is the only way which make you understand the problem

This question is similar to a math question but much harder. I never think gmat will offer this hard question. experts, members, pls, comment.
Top
Join the discussion