My Math Forum  

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

Advanced Statistics Advanced Probability and Statistics Math Forum

LinkBack Thread Tools Display Modes
February 23rd, 2012, 08:18 PM   #1
Joined: Feb 2012

Posts: 10
Thanks: 0

2 part probability problem

Part 1:

It is found that when a particular 4-sided die is rolled a 1 occurs 20.5% of the time, a 2 occurs 24.3% of the time, a 3 occurs 28.8% of the time, and a 4 occurs 26.4% of the time.
a) If the die is rolled eight times, what is the probability that an odd number occurs exactly four times?
b) What is the expected value of a single roll of the die?

Part 2: For the die in problem #9, let the random variable X be defined as X = (the number of times that 2 occurs). If the die is rolled a total of four times:
a) Construct a table for the probability distribution of X.
b) Construct a histogram for the probability distribution of X.
c) Find E(X).
Ataloss is offline  
February 24th, 2012, 12:34 AM   #2
Senior Member
Joined: Oct 2011
From: Belgium

Posts: 522
Thanks: 0

Re: 2 part probability problem

1 a)
wnvl is offline  

  My Math Forum > College Math Forum > Advanced Statistics

part, probability, problem

Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Probability doubts part 2 Alexis87 Probability and Statistics 4 July 28th, 2013 11:29 AM
Probability of selecting things in order Part 2 daigo Probability and Statistics 5 February 23rd, 2012 09:23 AM
Integration by part problem adiby Calculus 7 August 31st, 2010 03:05 AM
please help. part 2. haruka-san Advanced Statistics 6 November 28th, 2007 07:29 AM

Copyright © 2019 My Math Forum. All rights reserved.