Register to reply

Statistics, Probability ! Help!

by Calculator14
Tags: probability, statistics
Share this thread:
Calculator14
#1
Jul6-11, 02:23 PM
P: 30
1. The problem statement, all variables and given/known data

The probability that Joe owns a microwave oven is 75%; the probability that he owns a CD player is 45%; and the probability that he owns both is 40%. Find the probability that he owns either one but not both.

2. Relevant equations

(work posted below)

3. The attempt at a solution

P(only microwave)= .75-.4 = .35
P(only CD Player) = .45 - .4 = .05
P(only micr. or CD Pl) = .35 + .05 = .4

Answer = .4
Phys.Org News Partner Science news on Phys.org
Climate change increases risk of crop slowdown in next 20 years
Researcher part of team studying ways to better predict intensity of hurricanes
New molecule puts scientists a step closer to understanding hydrogen storage
obafgkmrns
#2
Jul6-11, 03:49 PM
P: 126
You got it! Try visualizing it with a Venn diagram: 2 overlapping circles representing probabilities that he owns either or both, surrounded by a large circle that represents probability that he owns either, both, or neither. (Hint: probability he owns neither is 0.2)


Register to reply

Related Discussions
Statistics, probability ! Help! Engineering, Comp Sci, & Technology Homework 3
Statistics, probability Engineering, Comp Sci, & Technology Homework 2
Probability & Statistics: Order Statistics Calculus & Beyond Homework 2
Probability (Statistics) Precalculus Mathematics Homework 1
Statistics Probability - How do I do this? Set Theory, Logic, Probability, Statistics 1