Lesson: Challenging Problem Solving - 27t02

Dependent Probability

[Page 27 of 37]

Basic probability, the topic of the previous screen, is also known as independent probability - the chance of selecting a marble was not dependent on any previous outcome. Only the relative numbers of marbles in the box at the moment of selection determined the probability of choosing a certain marble.

Dependent probability, on the other hand, refers to situations in which the chance of an outcome occurring is influenced by a previous outcome. In such instances, the probability of both outcomes occurring is:

Probability of Outcome 1 Probability of Outcome 2 = Probability of Outcomes 1 and 2

The following example will illustrate:

div>

A box contains 3 blue marbles, 2 green marbles, and 4 red marbles. If one marble is selected at random, and a second marble is selected without replacing the first, what is the probability that both marbles chosen are blue?
What is the probability that a blue marble will be chosen on the first draw? Enter your response into the text box below and then click Continue.

Probability of blue on 1st draw:

_____
What is the probability that a blue marble will be chosen on the second draw if a blue marble was chosen on the first draw? Enter your response into the text box below and then click Continue.

Probability of blue on 2nd draw:

_____

Because we have decreased the total number of marbles and the total number of blue marbles by 1 on our first draw, our probability for picking a second blue marble is .

 

Back Next

Next to display next topic in the chapter.

Video Lessons and 10 Fully Explained Grand Tests

Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.

Quantitative Aptitude Reasoning English General Knowledge Picture Patterns
Current Menu

Test Prep New

Practice MCQs

Admission Tests

Section Lessons

US Degrees

Pak Universities

Employment

ISSB Selection

ISSB Procedures

Test Preparation

Non-Verbal Tests

Thematic Tests

GTO Tasks

Pak Air Force

Pak Army

Pak Navy

Schools & Colleges

Expressions

Essays

Education News

Scholarships & Study

More for You
MCQ with question Explanations Scholarships and Financial Aid

Data Sufficiency

Easily crack the most logical section of the GMAT

Graphs - Data Interpretation

Lessons and practice questions for Data Interpsection - Graphs

SAT Reasoning Test

SAT Reasoning - a general test for undergard admissions throughout the world

All in this Category

You may be interested in

Colleges in Faisalabad

A comprehensive list of colleges in ...

Colleges in Rawalpindi

List of major colleges in Rawalpind ...

Study in Turkey

How to get admission and Visa to st ...

Govt and Private Recruitment

List of Govt and private Jobs in Pa ...

PPSC Post of Tehsildar Exam

Learn about the exam of PPSC Post o ...

University Test Pattern

Test pattern of Universities ...

Universities in Balochistan

A comprehensive list of universitie ...

Engineering Universities in KPK

A list of Engineering colleges and ...

About us

EntryTest.com is a test preparation service for students seeking successful career.

About Disclaimer

Quick Test Prep

NUST NET IBA Karachi SAT LUMS LCAT LSE

 

NTS GAT NTS NAT GMAT GRE ACT

Study Abroad

Education Abroad Business Schools MS in USA