A medical student studying anatomy records the average length of human eye lashes. Her sample of subjects includes both men and women in a ratio of two to three. Both the male and female samples have a normal distribution. Her study shows that two percent or fewer of men have eyelashes shorter than 0.35 cm and that two percent or fewer of women have eyelashes shorter than 0.67 cm. If men have an average eyelash length of 0.6 cm and women have an average length of 0.79 cm, what percentage of all subjects has an eyelash length greater than 0.85 cm?
A) 2%
B) 7.3%
C) 10.4%
D) 16%
E) 18%
The OA is C.
Can any expert explain this PS question please? i need help to solve it. Thanks.
Target Test Prep 20% Off Flash Sale is on! Code: FLASH20
Redeem5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILSThis topic has expert replies
-
- Moderator
- Posts: 2209
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
A medical student studying anatomy records...
by
BTGmoderatorLU » Thu Oct 26, 2017 6:06 am
• Page 1 of 1
5/5
5 Star (473 Reviews)
"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."
"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."
"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."
GMAT Course Reviews
Admissions Consulting Reviews
FREE GMAT PREP RESOURCES
GMAT PREP DEAL TRACKER
- ONLY $85
- SAVE $300
- ONLY $99
- $150 OFF
- 50% OFF
- SAVE $75
- 100% OFF