Introduction to probability
Everything You Need in One PlaceHomework problems? Exam preparation? Trying to grasp a concept or just brushing up the basics? Our extensive help & practice library have got you covered. | Learn and Practice With EaseOur proven video lessons ease you through problems quickly, and you get tonnes of friendly practice on questions that trip students up on tests and finals. | Instant and Unlimited HelpOur personalized learning platform enables you to instantly find the exact walkthrough to your specific type of question. Activate unlimited help now! |
Make math click 🤔 and get better grades! 💯Join for Free
Get the most by viewing this topic in your current grade. Pick your course now.
Examples
Lessons
- Below is a probability model showing the weathers in fall in City A.
Weather
Probability
Rain
0.35
Snow
0.08
Sunny
0.16
Cloudy
0.41
- Each student in a class of 30 writes his or her name on a slip of paper. These slips of paper are folded and put in a jar. Half of these slips are blue and half are yellow.
- What is the probability that a blue slip will be picked? Write your answer as a fraction, a decimal, a ratio, and a percent.
- Rob, Jennie and Alice are in this class. What is the probability that one of these students' names will be picked? Write your answer as a fraction, a decimal, a ratio, and a percent.
- Jen and her friend spin the wheel to decide what fun activity they will do this afternoon.
- What is the probability that the spin will land on movie or swimming? Write your answer as a percent and decimal.
- What is the probability that the spin will not land on dancing or shopping? Write your answer as a percent and fraction.
- If they spin the wheel twice, what is the probability that the spin will land on soccer and frisbee? Write your answer as a percent and fraction.