REVIEW GAME

A bag contains ten black marbles, twenty white marbles, and five blue marbles. What is the probability of picking a blue marbles?

• 1/7

• 2/7

• 4/7

• 5/7

The spinner is numbered 1, 2, 3, 4, 5, 6. What is the probability that the spinner will land on an even number?

• 2/5

• 1/4

• 1/2

• 2/3

A pupil is selected at random from a class of 18 girls and 17 boys. What is the probability that the pupil chosen is a boy?

• 1/7

• 18/35

• 1/2

• 17/35

A spinner numbered 1, 2, 3, 3, 3, 3, 3, 6, 6. What is the probability that the spinner will stop on number 3?

• 2/9

• 5/9

• 1/9

• 1/3

When the newscaster said that there is 50% chance of rain, what did she mean?

• impossible to happen

• unlikely to happen

• likely to happen

• as likely as unlikely to happen

State whether it is Discrete or Continuous;

The speed of a car

• Discrete

• Continuous

State whether it is Discrete or Continuous;

The sum rolled on a pair of dice

• Discrete

• Continuous

State whether it is Discrete or Continuous;

The winning ticket number drawn from a raffle

• Discrete

• Continuous

State whether it is Discrete or Continuous;

The weight of parcels at a post office

• Discrete

• Continuous

Which of the following random variables is NOT continuous?

• Amount of gasoline in a car.
• Time it takes to commute to work.
• Number of goals scored by a hockey team.
• Lifetime of a AAA battery.