# CBSE Class 9 - Problems on Empirical Probability Videos

Probability of an event of choosing a family from a group of families under certain conditions

This video explains a case study based question which tells us to find the probability of an event of choosing a family from a group of families under certain conditions

- if the events happen then probability of
- A no. is chosen at random, find the probability that the digit at the unit’s place is: 1. 9 2. a non- zero multiple of 3 3. a non- zero even no. 4. an odd no.
- A survey at a university was conducted among 880 students. Of these, 500 identified themselves as "smokers". Compute the empirical probability that a randomly selected student is not from a "smoker".
- In making a math project, a teacher found out that 26 people took two to three hours, 14 people took three to four hours and 10 people took more than four hours to complete a particular assignment. What is the experimental probability that the assignment can be done in less than four hours?
- 12 packets of salt, each marked 2 kg, actually contained the following weights (in kg) of salt: 1.95, 2.02, 2.06, 1.98, 2.03, 1.97, 2.04, 1.99, 1.985, 2.025, 2.00, 1.98 Out of these packets one packet is drawn at random. What is the probability that the chosen packet contains more than 2 kg of salt?
- In the past 50 cricket matches between two teams A and B, team A had won 29 matches. What is the experimental probability that in the next cricket match between the two teams, team A will lose?