My Math Forum  

Go Back   My Math Forum > High School Math Forum > Probability and Statistics

Probability and Statistics Basic Probability and Statistics Math Forum

Thanks Tree1Thanks
  • 1 Post By Country Boy
LinkBack Thread Tools Display Modes
February 29th, 2016, 11:33 PM   #1
Joined: Feb 2016
From: Europe

Posts: 1
Thanks: 0

X~N(2,2) Calculate probability P(|X-1|<2)

This should be "easy task" like looking the table from "normal distribution's cumulative distribution function":

Normal distribution X~N(2,2) calculate probability P(|X-1|<2) ?
Clue= transform to "standard normal distribution"
ANSWER= 0.744
123314 is offline  
March 5th, 2016, 04:10 AM   #2
Math Team
Joined: Jan 2015
From: Alabama

Posts: 3,245
Thanks: 887

Do you have a question? Are you asking if your answer is correct?

|X- 1|< 2 is the same as -2< X- 1< 2 which is the same as -1< X< 3. With mean 2 and standard deviation 2, X= -1 corresponds to the "standard normal" variable z= (-1- 2)/2= -3/2 and X= 3 corresponds to z= (3- 2)/2= 1/2. What are the probabilities N(z< -3/2) and N(z< 1/2)?
Thanks from adamwlev
Country Boy is offline  

  My Math Forum > High School Math Forum > Probability and Statistics

calculate, probability, p|x1|&lt2, p|x1|<2, xn2

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Calculate the probability of 0 or 2+ occurrences Parlo Probability and Statistics 1 July 30th, 2014 06:12 PM
How to calculate this kind of probability? decly Advanced Statistics 4 December 27th, 2011 02:54 AM
How to calculate dice probability? nossrannug Probability and Statistics 4 April 18th, 2011 03:20 PM
Calculate probability value Geteburg Advanced Statistics 0 February 8th, 2010 08:19 AM

Copyright © 2018 My Math Forum. All rights reserved.