The standard deviation of a normal distribution of data is 2

Oldest

Best Reply

Author

Message

TAGS:

Manager

Joined: 20 Nov 2009

Posts: 172

Followers: 5

Kudos [?]: 14 [0], given: 64

The standard deviation of a normal distribution of data is 2 [#permalink]

16 Aug 2010, 11:15

00:00

Question Stats:

83% (01:19) correct

16% (02:00) wrong

based on 1 sessions

The standard deviation of a normal distribution of data is 2, and 3 standard deviations below the mean is greater than 43. What is a possible value for the mean of the distribution?

a. 46
b. 47
c. 48
d. 49
e. 50

[Reveal] Spoiler: OA

_________________

But there’s something in me that just keeps going on. I think it has something to do with tomorrow, that there is always one, and that everything can change when it comes.
http://aimingformba.blogspot.com

GMAT Club team member

Joined: 02 Sep 2009

Posts: 11628

Followers: 1802

Kudos [?]: 9614 [1] , given: 829

Re: Statistics question [#permalink]

16 Aug 2010, 11:21

This post received
KUDOS

aiming4mba wrote:

3 standard deviations below the mean is greater than 43 --> Mean-3*SD>43 --> M-6>43 --> M>49.

Answer: E.
_________________

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. NEW!!!

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set. NEW!!!

What are GMAT Club Tests?
25 extra-hard Quant Tests

Find out what's new at GMAT Club - latest features and updates

Re: Statistics question [#permalink] 16 Aug 2010, 11:21

		Similar topics	Author	Replies	Last post
Similar Topics:		The standard deviation of a certain set of data is 3. If 20	NEWKID	6	12 Nov 2004, 06:55
		The standard deviation of a certain set of data is 3. If 20	GMATT73	6	02 Oct 2005, 04:29
	2	normal distribution	adam15	3	07 Dec 2009, 18:08
	1	Standard Normal Probability Distribution question	jovic1104	1	06 Jul 2010, 12:49
		Arithmetic mean and standard deviation of a certain normal	anilnandyala	2	02 Nov 2010, 05:32

The standard deviation of a normal distribution of data is 2

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

The standard deviation of a normal distribution of data is 2

The standard deviation of a normal distribution of data is 2

Main navigation

GMAT Resources

Partners

MBA Resources