My Math Forum  

Go Back   My Math Forum > High School Math Forum > Algebra

Algebra Pre-Algebra and Basic Algebra Math Forum


Reply
 
LinkBack Thread Tools Display Modes
October 29th, 2008, 12:53 AM   #1
Newbie
 
Joined: Oct 2008

Posts: 1
Thanks: 0

probability of incorrect conclusion? confused..

I have a pH measurement kit that gives unbiased pH measurements, which float around the true value with a standard deviation of 0.15
and it has an approximately normal distribution for its measurement errors

and supposedly, if the pH of the lake I'm testing is below 5, it's considered "threatened".

the question is:
if you take only a single water sample and measure the pH, whats the probability that you'll incorrectly conclude the lake is threatened?
bob.dob is offline  
 
October 29th, 2008, 12:50 PM   #2
Global Moderator
 
Joined: May 2007

Posts: 6,524
Thanks: 587

Re: probability of incorrect conclusion? confused..

It depends on the measured value and also how you are drawing the conclusion. For example if you measure the pH to be 5, what would you conclude, since it is equally probable to be below 5 (bad) as above 5 (good).
mathman is offline  
Reply

  My Math Forum > High School Math Forum > Algebra

Tags
conclusion, confused, incorrect, probability



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
which conclusion(s) can be made if you know the following? J lovetolearn Calculus 1 April 5th, 2012 09:01 PM
Is this incorrect? CherryPi Calculus 56 February 2nd, 2012 01:13 AM
Probability (confused) hoyy1kolko Probability and Statistics 1 April 15th, 2011 09:30 AM
Premises and a Conclusion alireza6485 Applied Math 1 September 28th, 2009 04:22 PM
two different answers in limits but one is incorrect conjecture Calculus 3 July 16th, 2008 05:12 PM





Copyright © 2018 My Math Forum. All rights reserved.