Probability Concepts and Applications

This video tutorial introduces the concept of probability, explaining how it measures the likelihood of events. It covers the terms likely, unlikely, and impossible, and provides examples using fruit and writing tools to calculate probabilities. The tutorial demonstrates how to determine the probability of selecting specific items from a group, emphasizing the formula: probability equals the number of favorable outcomes divided by the total number of possible outcomes.

What is probability a measure of?

• The number of favorable outcomes

• The number of possible outcomes

• The likelihood of an event occurring

• The certainty of an event

Which of the following describes an event that is certain to happen?

• Likely

• Certain

• Unlikely

• Impossible

If an event has a probability greater than 0.5, how is it described?

• Impossible

• Certain

• Likely

• Unlikely

What is the probability of an impossible event?

• 1

• 0.5

• 0

• Greater than 0.5

If the probability of an event is 0, what does it mean?

• The event is certain

• The event is impossible

• The event is unlikely

• The event is likely

What is the probability of an event that is certain to happen?

• Greater than 1

• 1

• 0.5

• 0

If an event is unlikely, what is its probability?

• Greater than 0.5

• Equal to 0.5

• Less than 0.5

• Equal to 1

How do you calculate the probability of an event?

• Add the number of favorable outcomes to the total number of possible outcomes

• Multiply the number of favorable outcomes by the total number of possible outcomes

• Subtract the number of favorable outcomes from the total number of possible outcomes

• Divide the number of favorable outcomes by the total number of possible outcomes

In the fruit example, what is the probability of picking a peach?

• 1/11

• 0

• 2/11

• 6/11

What is the probability of picking a banana from the fruit box?

• 1/11

• 2/11

• 0

• 6/11