Ask Experts Questions for FREE Help !
Ask

Determining how many scores fell within a 70-80% range

Asked Mar 2, 2007, 09:23 AM — 3 Answers
Hi,
I am wondering if 100 students took an exam and the mean score was 75, with a standard deviation of 5 ( and the scores were normally distributed) how may scores fell between 70-80?

Search this Thread
Share |
3 Answers
galactus's Avatar
galactus Posts: 2,272, Reputation: 1436
Ultra Member
  
#2

Mar 2, 2007, 12:21 PM
Remember the Empirical Rule. 1 standard deviation from the mean is 68% of the scores.
Helpful
debraknapp's Avatar
debraknapp Posts: 1, Reputation: 10
Junior Member
  
#3

Jul 10, 2011, 04:10 PM
My answer is 36
Helpful
JamesTT's Avatar
JamesTT Posts: 2, Reputation: 1
New Member
  
#4

Oct 15, 2012, 11:29 AM
I am wondering if 100 students took an exam and the mean score was 70, with a standard deviation of 5 ( and the scores were normally distributed) how may scores fell between 0-69, 70-79, 80-89, 90-100?
Helpful
Not your question? Ask your question View similar questions
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Add your answer here.

Remove Text Formatting
 

Undo
Redo
  
Decrease Size
Increase Size
Bold
Italic
Underline
Align Left
Align Center
Align Right
Ordered List
Unordered List
Decrease Indent
Increase Indent
Insert Email Link
Wrap [QUOTE] tags around selected text
Wrap [CODE] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text
Wrap [YOUTUBE] tags around selected text
Notification Type:



Check out some similar questions!

US Universities that don't require gre and toefl scores [ 9 Answers ]

Are there any universities in US which don't require gre and toefl scores...if there are any can you give me the list of those universities Thanq

College apps, SAT scores tax deductible? [ 3 Answers ]

Are college app fees and SAT/ACT test fees tax deductible?

View more Mathematics questions Search