PS_Video Lesson 5.1.1 Probability, Sample Space, and Complement

What is the formula for calculating probability?

• Total number of favourable outcomes / Total number of possible outcomes

• Total number of possible outcomes / Total number of favourable outcomes

• Number of events / Total number of trials

• Number of successful trials / Total number of unsuccessful trials

What is the probability of getting heads twice if a coin is flipped two times?

• 0.5

• 0.25

• 0.75

• 1.0

What does a sample space refer to in probability?

• The set of all impossible outcomes.

• The set of only favourable outcomes.

• The entire set of possible outcomes.

• The outcome of a single event.

What is the valid range for the probability of an event occurring?

• Between 0 and 0.5, inclusive

• Between 0 and 1, inclusive

• Greater than 0 but less than 1

• Any real number

What is the Complement Rule?

• The Complement Rule states that P(A) = P(A') + P(A).
• The Complement Rule is used to find the mean of a probability distribution.
• The Complement Rule is P(A') = 1 - P(A).
• The Complement Rule defines the probability of an event occurring as P(A) = 0.5.