Q4-WEEK 7 PROBABILITY OF A SIMPLE EVENT

OBJECTIVES At the end of the lesson, students will be able to: • finds the probability of a simple event.

The Probability of an event, P(event) • is a number from 0 to 1, which tells how likely an event is to happen. • The more likely an event is to occur, the higher its probability. • The less likely an event is to occur, the lower its probability.

RULES OF PROBABILITY • The probability of any event is a number (either a fraction, a decimal or a percent) from 0 to 1. • The sum of the probabilities of all outcomes in the sample space is 1. • If an event will never happen, then the probability is 0. • If an event is sure to happen, then the probability is 1

• One of the best examples of this is the weather today. By browsing your weather app on your mobile phone, you may know if there is a chance of rain today. Based on its given data, which is presented in either decimal, fraction, or percent, you may conclude if it is likely to rain, unlikely to rain, surely to rain, or it will not rain.

PROBABILITY OF SIMPLE EVENT • An event consisting of a single point of the sample space is known as a simple event. To solve the probability of a simple event, we need to get the ratio of favorable outcomes to the total number of possible outcomes or known as the Sample Space. P(event)= Number of favorable outcomes P(E) = () () Number of all outcomes

What is the probability of obtaining an even number in rolling a die? P(E) = () () P(E) = (,,) (,,,,,) P(E) = 0.50 50%

• In a Grade 8 class in Bacoor National High School-Molino Main, the math teacher writes each letter of the word MATHEMATICS on a card. A card is chosen at random from the box. What is the probability of getting the letter ‘M’? P(E) = () () P(E) = (,) (,,,,,,,,,,) P(E) = 0.18 18%

• In the celebration of the International Day of Mathematics, Bacoor National High School-Molino Main conducted a Poster Making Contest among its students. If there are 12 male participants and 18 female participants, what is the probability that the winner is a: a. male student? b. female student?

How can we relate probability in our daily lives?

Spin the Wheel • Red color • Yellow color • Blue color • Violet color • Green color • Not red

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