Mathematics Grade 9 15 min

Probability of independent and dependent events

Probability of independent and dependent events

What you'll learn

  • Identify the minuend, subtrahend, and difference in a subtraction problem with up to three-digit numbers.
  • Solve subtraction problems with up to three-digit numbers without regrouping, using a vertical format, with 80% accuracy.
  • Write a subtraction sentence (e.g., 345 - 123 = 222) to represent a given word problem involving subtraction with up to three-digit numbers.
  • Explain how to check the answer to a subtraction problem by using addition in at least 2 out of 3 opportunities.

Tutorial Preview

1

A bag has 2 red and 3 blue marbles. You pick one, replace it, then pick another. What is P(Red, then Red)?

2

A bag has 2 red and 3 blue marbles. You pick one, DON'T replace it, then pick another. What is P(Red, then Red)?

3

Which pair of events is dependent: (A) Rolling a die twice, or (B) Picking two students from a class?

Sample Practice Questions

Easy
You flip a fair coin twice. What is the probability of getting two heads (H, H)?
0.1/4
1.1/2
2.1/3
3.1
Easy
A bag has 2 red and 1 blue sock. You pick two without replacement. What is P(Red, then Red)?
0.1/3
1.2/3
2.1/2
3.1/6
Easy
Which of these events are independent?
0.Rolling a die twice
1.Drawing 2 cards
2.Picking 2 friends
3.Eating 2 cookies

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Frequently asked questions

What grade level is "Probability of independent and dependent events"?

Probability of independent and dependent events is a Grade 9 Mathematics lesson on ExcelOS.

What will I learn in Probability of independent and dependent events?

You'll be able to: Identify the minuend, subtrahend, and difference in a subtraction problem with up to three-digit numbers; Solve subtraction problems with up to three-digit numbers without regrouping, using a vertical format, with 80% accuracy….

Is "Probability of independent and dependent events" free to practice?

Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.

How many practice questions are included with Probability of independent and dependent events?

This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.

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