My Math Forum  

Go Back   My Math Forum > College Math Forum > Advanced Statistics

Advanced Statistics Advanced Probability and Statistics Math Forum


Reply
 
LinkBack Thread Tools Display Modes
September 26th, 2008, 09:45 PM   #1
Senior Member
 
Joined: Sep 2008

Posts: 199
Thanks: 0

simple probability distribution

Got stuck here ,, someone pls explain

The marks of history in a test are normally distributed with a mean of 55 and a standard deviation of 8 .
( a ) if 10.2 % of the students failed History , find the minimum marks needed to pass







( b ) If 73.4% of the students scored a credit in History , find the minimum marks to score a credit






thanks 4 ur help
mikeportnoy is offline  
 
September 27th, 2008, 11:55 AM   #2
Global Moderator
 
CRGreathouse's Avatar
 
Joined: Nov 2006
From: UTC -5

Posts: 16,046
Thanks: 938

Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms
Re: simple probability distribution

Where did you get stuck? I just see the problems.
CRGreathouse is offline  
September 27th, 2008, 09:10 PM   #3
Senior Member
 
Joined: Sep 2008

Posts: 199
Thanks: 0

Re: simple probability distribution

not really stuck,, don know how to start , can u pls show me the steps .THanks
mikeportnoy is offline  
Reply

  My Math Forum > College Math Forum > Advanced Statistics

Tags
distribution, probability, simple



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Simple question: normal distribution and variance rihuk Advanced Statistics 1 October 8th, 2010 11:45 AM
Simple Distribution & Expectations >_< Aeonitis Advanced Statistics 3 August 5th, 2010 03:57 PM
Simple Exponential distribution problem....need help rkruz Algebra 0 July 6th, 2009 10:20 PM
Probability distribution m.exp(-rm) gkannan16 Advanced Statistics 0 June 18th, 2009 09:54 AM
Probability Distribution Help? RossBrons Advanced Statistics 1 December 28th, 2008 08:35 AM





Copyright © 2019 My Math Forum. All rights reserved.