Probability Concepts and Problems

Teacher Eliza guides Grade 8 students through a lesson on probability, covering simple events, experimental and theoretical probability, and problem-solving. The lesson begins with a review of counting principles and progresses to defining probability concepts. Students learn to differentiate between experimental and theoretical probability and solve related problems. The session concludes with a practice activity to reinforce learning.

What should you prepare before starting the lesson on probability?

• A textbook and a dictionary

• A calculator and a ruler

• Your math 8 self-learning module, pen, and paper

• A computer and internet connection

How many ways can you order a coffee with 3 flavors, 2 sizes, and 2 temperatures?

• 6

• 8

• 10

• 12

Mary has 5 blouses, 4 skirts, and 2 pairs of sandals. How many different outfits can she create?

• 40

• 30

• 20

• 50

What is a simple event in probability?

• An event with equally likely outcomes

• An event with no outcomes

• An event with certain outcomes

• An event with multiple outcomes

What is the probability of getting a head when tossing a coin?

• 100%

• 75%

• 50%

• 25%

What is the main difference between experimental and theoretical probability?

• Experimental probability is based on actual experiments, while theoretical is based on expected outcomes.

• Experimental probability is always higher than theoretical probability.

• There is no difference between them.

• Theoretical probability is based on experiments, while experimental is based on theory.

If a committee has 8 females and 12 males, what is the probability of selecting a female president?

• 3/5

• 2/5

• 1/2

• 1/4

What is the probability of drawing a number 3 from a box containing numbers 1 to 10?

• 1/10

• 1/5

• 1/2

• 1/3

What is the probability of drawing an even number from numbers 1 to 10?

• 1/4

• 1/2

• 1/3

• 2/3

What is the probability of drawing a prime number from numbers 1 to 10?

• 4/5

• 3/5

• 2/5

• 1/5