Simple Probability of Independent Events

The outcome of one event does not affect the outcome of the other event.

• independent event

• dependent event

Clara picks a marble at random, puts it back, and then picks another marble at random.

• independent

• dependent

Pablo chooses a colored marble from a mixed bag and writes down the color. Pablo leaves it out and then draws another.

• Independent
• Dependent

You are going to spin a spinner 3 times (that has the spaces A, B, C, D). What is the probability of spinning B on all 3 times? (Set up of work)

• 1/4 x 1/4 x 1/4

• 1/4 x 3

• 4 x 4 x 4

• 3/4 x 3/4 x 3/4

Find the probability of getting a 1 or 2 on a die and tails on a quarter. (Which is the correct work?)

• 1/6 x 1/6 x 1/2

• 2/6 x 1/2

• 1/6 x 1/2

• 2/6 x 2

Mr. & Mrs. Mathy are having triplets. What is the probability that they will all be girls? (Which is the correct set up of work?)

• 1/3 x 1/3 x 1/3

• 1/2 x 3

• 1/2 x 1/2 x 1/2

• 1/8

Find the probability of getting a 5 on a dice and a tails on a dime.

• 5/6 x 1/2

• 1/5 x 1/2

• 1/6 x 1/2

• 1/6 + 1/2

To win a carnival game, a player wins if a coin lands the green section facing heads up. What is the probability that a player will win?

What is the probability of spinning red two times in a row?

You flip a nickel three times.
Find the probability that all flips will land on tails.

• 1/2
• 1/4
• 1/6
• 1/8