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Lesson Example Discussion Quiz: Class Homework

Quiz At Home

Title: Conditional probability

Grade: 9-a Lesson: S3-L6

Explanation: Hello Students, time to practice and review. Let us take next 10-15 minutes to solve the five problems using the Quiz Sheet. Then submit the quiz to get the score. This is a good exercise to check your understanding of the concepts.

Quiz: at Home

Problem Id	Question	Options
1	Susan took two tests. The probability of her passing both tests is 0.6. The probability of her passing the first test is 0.8. What is the probability of her passing the second test given that she has passed the first test by using conditional theorem.	A) 0.80 B) 0.75 C) 0.85 D) 0.90
2	What is the probability that the total of two dice will be greater than 9, given that the first die is a 5 by using conditional theorem.	A)1/3 B) 2/3 C) 4/3 D) 5/3
3	In a group of 10 people, 4 people bought apples, 3 bought oranges, and 2 bought apples and oranges. If a buyer chose randomly bought apples, using the conditional probability formula find out what is the probability they also bought oranges by using conditional theorem.	A) 0.6 B) 0.5 C) 0.7 D) 0.8
4	In a group of 100 sports car buyers, 40 bought alarm systems, 30 purchased bucket seats, and 20 purchased an alarm system and bucket seats. If a car buyer chosen at random bought an alarm system, what is the probability they also bought bucket seats by using conditional theorem.	A) 0.5 B) 0.7 C) 0.9 D) 0.6
5	My neighbor has 2 children. I learn that she has a son, Adam. What is the probability that Adam’s sibling is a boy by using conditional theorem.	A) 4/3 B) 2/3 C) 1/3 D) 5/3

Problem Id

Question

Options

Susan took two tests. The probability of her passing both tests is 0.6. The probability of her passing the first test is 0.8. What is the probability of her passing the second test given that she has passed the first test by using conditional theorem.

A) 0.80
B) 0.75
C) 0.85
D) 0.90

What is the probability that the total of two dice will be greater than 9, given that the first die is a 5 by using conditional theorem.

A)1/3
B) 2/3
C) 4/3
D) 5/3

In a group of 10 people, 4 people bought apples, 3 bought oranges, and 2 bought apples and oranges. If a buyer chose randomly bought apples, using the conditional probability formula find out what is the probability they also bought oranges by using conditional theorem.

A) 0.6
B) 0.5
C) 0.7
D) 0.8

In a group of 100 sports car buyers, 40 bought alarm systems, 30 purchased bucket seats, and 20 purchased an alarm system and bucket seats. If a car buyer chosen at random bought an alarm system, what is the probability they also bought bucket seats by using conditional theorem.

A) 0.5
B) 0.7
C) 0.9
D) 0.6

My neighbor has 2 children. I learn that she has a son, Adam. What is the probability that Adam’s sibling is a boy by using conditional theorem.

A) 4/3
B) 2/3
C) 1/3
D) 5/3