Formulae/Concepts Needed:
> probability rules
> dependent and independent events
> mutually exclusive and non-mutually exclusive events
> conditional probability
> tree diagrams
Pre-requisites:
- What is probability?
A short discussion of what is probability (in just 1 minute). Probability is defined with example.
- Overview of Experiment, Sample Space and Events
This video gives an overview of the definition and corresponding examples of experiment, sample space and events.
- Examples of Experiments, Sample Space and Events
This video provides ample examples of experiment, sample space and events. Most of them are presented in different ways: some using list method, tree diagram, and/or possibility diagrams.
- Answers of the Homework from the Examples of Experiments, Sample Space and Events
This video provides the complete calculations/workings for the answers of the homework given in the previous video on experiment, sample space and events.
Here is the copy of the practice exercises on Probability. The file contains ten (10) items. It contains:
- Items involving dependent events
- Items involving tree diagrams
- Items involving data in tabular or table form
You may download the complete copy of the past paper items here (click the image below):
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You may also want to try the previous set of past papers on Measures of Central Location and Variation [Part 1] here (click on the image below):
You may also want to try the previous set of past papers on Measures of Central Location and Variation [Part 2] here (click on the image below):
Some other collection of past papers you might be interested:
Your comments and suggestions are welcome here. Write them in the comment box below. Thank you and God bless!
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ANSWER KEY:
ReplyDelete1(i)14/55
1(ii)7/11
1(iii)2/5
2(ii)17/26
3(i)0.4375 0r 7/16
3(ii)3/10
4(i)618/1281 or 206/427
4(ii)412/1281
4(iii)not independent
4(iv)358/1281 or 179/282
5(i)0.2
5(ii)21/50 or 0.42
5(iii)2/3
6)88/145
7(i)0.8
7(ii)0.625 or 5/8
8) 8/59 or 0.136
9)(i)47/140
9)(ii)5/47
9)(iii)not independent
10)(iv)13/61 or 0.213