Probability & expectaion

What's the probability of landing on a shaded square?

• 3

• 3/9

• 3/12

What's the probability of NOT landing on a shaded square?

• 6/9

• 9/12

• 9

What's the probability of landing on a white square?

• 9

• 9/3

• 9/12

What's the probability of landing on a shaded square?

• 7

• 7/12

• 7 out of 12

What's the probability of landing on a white square?

• 5

• 5 out of 12

• 5/12

What's the probability of NOT landing on a shaded square?

• 5

• 5 out of 12

• 5/12

I have a box of 20 pens

If P(red pen) = 0.2

How many red pens would you expect in the pot?

• 2

• 3

• 4

I have a box of 20 pens

If P(blue pen) = 0.5

How many red pens would you expect in the pot?

• 4

• 5

• 10

I have a box of 20 pens

If P(green pen) = 0.1

How many red pens would you expect in the pot?

• 1

• 2

• 10

I have a bag of 50 sweets

P(red sweet) = 0.5

How many red sweets would you expect in the bag?

• 5

• 10

• 15

• 25