Probability Review

Front

An event has a 50% chance of happening. This event is ___?

Back

As likely as not.

Front

What is the probability of drawing a green marble from a jar containing 2 green, 4 blue, 3 yellow, and 2 black marbles?

Back

The probability of drawing a green marble is \( \frac{2}{11} \).

Front

What is the probability of choosing a letter that is NOT 'A' from the word 'ALGEBRA'?

Back

The probability is \( \frac{5}{7} \).

Front

What does it mean if an event is described as 'impossible'?

Back

An impossible event has a probability of 0.

Front

What does it mean if an event is described as 'certain'?

Back

A certain event has a probability of 1.

Front

If a marble is chosen at random from a jar and replaced, what is the probability of drawing the same color marble twice?

Back

The probability is the square of the probability of drawing that color once.

Front

What is the probability of choosing a pink marble if there are no pink marbles in the jar?

Back

The probability is impossible, or 0.

Front

How do you calculate the probability of two independent events occurring?

Back

Multiply the probabilities of each event.

Front

What is the probability of drawing a green marble, putting it aside, and then drawing another green marble from a bag of 17 marbles (4 blue, 6 green, 2 red, 5 yellow)?

Back

The probability is \( \frac{15}{136} \).

Front

What is the total number of outcomes when rolling a six-sided die?

Back

There are 6 possible outcomes.