SaiBook.us Statistics

Lesson Example Discussion Quiz: Class Homework

Quiz In Class

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: in Class

Problem Id	Question	Options
1	A bag contains 3 red and 7 black balls. Two balls are drawn at randon without replacement. If the second ball is red, what is the probability that the first ball is also red by using conditional theorem.	A) 7/9 B) 5/9 C) 4/9 D) 2/9
2	If a family has two children then find the conditional probability that both are girls if there is atleast one girl.	A) 4/3 B) 2/3 C) 1/3 D) 5/3
3	A dice and a coin are tossed simultaneously. Find the conditional probability of obtaining a 6, given that a head came up.	A) 5/6 B) 1/6 C) 7/6 D) 9/6
4	The probability of a student passing in science is ⅘ and the of the student passing in both science and maths is ½. What is the probability of that student passing in maths knowing that he passed in science by using conditional theorem.	A) 5/8 B) 3/8 C) 7/8 D) 9/8
5	Ten numbered cards are there from 1 to 15, and two cards a chosen at random such that the sum of the numbers on both the cards is even. Find the probability that the chosen cards are odd-numbered by using conditional theorem .	A) 4/7 B) 3/7 C) 5/7 D) 8/7

Problem Id

Question

Options

A bag contains 3 red and 7 black balls. Two balls are drawn at randon without replacement. If the second ball is red, what is the probability that the first ball is also red by using conditional theorem.

A) 7/9
B) 5/9
C) 4/9
D) 2/9

If a family has two children then find the conditional probability that both are girls if there is atleast one girl.

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

A dice and a coin are tossed simultaneously. Find the conditional probability of obtaining a 6, given that a head came up.

A) 5/6
B) 1/6
C) 7/6
D) 9/6

The probability of a student passing in science is ⅘ and the of the student passing in both science and maths is ½. What is the probability of that student passing in maths knowing that he passed in science by using conditional theorem.

A) 5/8
B) 3/8
C) 7/8
D) 9/8

Ten numbered cards are there from 1 to 15, and two cards a chosen at random such that the sum of the numbers on both the cards is even. Find the probability that the chosen cards are odd-numbered by using conditional theorem .

A) 4/7
B) 3/7
C) 5/7
D) 8/7