100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary Probability Study Notes R60,00
Add to cart
Quickly navigate to
Preview
  2.  
  3. Megamind Tutor Centre
  4.  
  5. Maths Core Grade 12

Summary

Summary Probability Study Notes

1 review
 106 views  1 purchase

All the PROBABILITY content needed for MATHS CORE PAPER 1 (Grade 10-12). By using these notes, you will be able to: Understand and work with dependent and independent events in addition to all the probability learnt in Grade 10 & 11, and use the fundamental counting principle to solve problems in...

[Show more]

Preview 2 out of 4  pages

Document information

  • October 20, 2019
  • 4
  • 2018/2019
  • Summary

Subjects

Written for

All documents for this subject (4)

1  review

review-writer-avatar

By: jonathanhardcastle • 4 year ago

Seller

avatar-seller
nikitavermeulen

Reviews received

Content preview

Probability
MATHEMATICS GRADE 12
BY NIKITA VERMEULEN

, PROBABILITY
REVISION/BASICS

NOTATION

The probability of an event occurring will always lie between 0 and 1, where 0 is an impossible event and 1 is a
certain event.

 P(A)  The probability of event A occurring.
 P’(A)  The probability of event A not occurring (this is also called the compliment of A).
 P (A or B) = P(AB)  The probability of A or B occurring.  is the symbol for or, it is also known
as union.
 P (A and B) = P(AB)  The probability of A and B occurring.  is the symbol for and, it is also
known as intersection.
 P (A | B)  The probability of A occurring given that B has occurred.

MUTUALLY EXCLUSIVE EVENTS

If two events are mutually exclusive, it means that they cannot occur in the same trial.

For example (Mutually Exclusive Events):

If a trial is the tossing of a dice and event A is obtaining a 6 while event B is obtaining a 2, it is impossible too
obtain events A and B together.

For example (Not Mutually Exclusive Events):

If a trial is picking a card and event A is selecting a queen and event B is selecting a heart, it is possible to
obtain events A and B together.

For mutually exclusive events: P (A and B) = 0

THE ADDITION RULE

The addition rule states: P (A or B) = P(A) + P(B) – P (A and B)

If events A and B are mutually exclusive, then P (A and B) = 0 and the addition rule simplifies to:

P (A or B) = P(A) + P(B).

COMPLEMENTARY EVENTS

If two events are complementary: P (not A) = P(A’) = 1 – P(A)

There are 2 conditions that have to be true for events to be complementary:

1. The events have to be mutually exclusive
2. P(A) + P(B) = 1



1

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller nikitavermeulen. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R60,00. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

53663 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 15 years now

Start selling
R60,00  1x  sold
  • (1)
Add to cart
Added