Grade 9 Probability (FQ1) Criterion A

What is the probability of spinning red?

A fair dice is rolled once. Find P(2')

(the probability of NOT rolling a 2)

• 2

Two dice are rolled and the numbers added together. What is the probability of rolling a sum total of 15 with a pair of dice?

• impossible

• unlikely

• equally likely

• likely

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red OR blue?

• 10

A bag has 3 red marbles, 2 blue, 1 yellow and 4 green. A marble is chosen, removed from the bag and another marble is drawn. What is the probability of picking 2 red marbles?

Is this an example of dependent or independent events?

• Dependent Events

• Independent Events

A sample space is the list of possible _____.

• experiments

• outcomes

• probabilities

• events

Lara and Yasmine are playing a game of tennis. The probability of Lara serving an ace is 0.6. The probability of Yasmine serving an ace is 0.55. What is the probability of Yasmine not serving an ace?

• 0.55

• There is no way to tell.

• 0.4

• 0.45

Event A has a probability of 0.3. What is the probability of the complement of Event A?

• 30%
• 3/100
• 7/100
• 0.7

What is the probability of getting an EVEN number AND a C?

A bag contains some red-colored and some blue-colored marbles. First a red-colored marble is drawn and then, without replacing the first marble, a blue-colored marble is drawn. Are the two events dependent or independent?

• Independent
• Dependent