Assuming Probability

What is the probability of picking a green ball from this beaker?

• A

• B

• C

• D

The probability you win a game is 0.4.

Assuming the outcome of each game is independent of the previous, if you played the game 200 times, how many times would you expect to lose?

• 80 times

• 160 times

• 120 times

• 40 times

• Simplify her fraction

• Watch more cars and record her results

• Try to find some blue cars

• Go to a different house and repeat the experiment

The following possibilities are about outcomes when rolling a fair ordinary dice.

A: Rolling an even number

B: Rolling a 4

C: Rolling a multiple of 3

D: Rolling a triangular number

Which of the following CANNOT occur at the same time?

• A and D

• C and D

• B and D

• A and B

The table shows the probabilities that a sweet taken at random from a large bag will be yellow, or will be green, or will be blue, or will be red.

What is the probability the sweet will be green?

• 0.45

• 0.35

• 0.65

• 0.25

The table shows the probabilities that a sweet taken at random from a large bag will be yellow, or will be green, or will be blue, or will be red.

If there are 400 sweets in the bag, how many are yellow?

• 600

• 415

• 60

• 2666

Harry, Jack, Adam and Louis asked a number of people whether they watch The Great British Bake Off.

Who's data collection shows a more reliable opinion of watching The Great British Bake Off?

• Harry

• Jack

• Adam

• Louis

The audience of a concert is made up by men, women and children in the ratio of 2 : 4 : 7.
What is the probability a person picked at random is a woman?