Prob and Stats 5.1-5.4 Flashcard

Front

What is the range of probability values?

Back

Probability can be between 0 and 1.

Front

What does P(B U M) represent in probability?

Back

P(B U M) represents the probability that you randomly choose someone who eats breakfast regularly or is a male.

Front

What is a probability distribution?

Back

A probability distribution is valid if the sum of P(x) equals 1.

Front

Calculate P(Freshman or Pizza) if the answer is 27/50.

Back

P(Freshman or Pizza) = 27/50.

Front

Are the events of spinning an even number and a number less than 4 mutually exclusive?

Back

No, they are not mutually exclusive.

Front

What is the definition of mutually exclusive events?

Back

Mutually exclusive events cannot occur at the same time.

Front

What is the definition of a probability distribution?

Back

A probability distribution describes how probabilities are distributed over the values of a random variable.

Front

What is the sum of probabilities in a valid probability distribution?

Back

The sum of probabilities in a valid probability distribution must equal 1.

Front

What is the probability of an event?

Back

The probability of an event is a measure of the likelihood that the event will occur.

Front

What does it mean if P(A) + P(B) > 1?

Back

It means that the events A and B are not mutually exclusive and their probabilities overlap.