Probability Frequency

A ball is chosen at random from a bag containing three different colours: pink, orange, and white. If P(pink) = 1/3, and P(orange) is 1/5, what is P(white)?

• 2/8

• 6/8

• 8/15

• 7/15

A ball is chosen at random from a bag containing three different colours: pink, orange, and white. If P(pink) = 1/3, and P(orange) is 1/5, what is P(not white, and not orange)?

• 1/3 or 5/15

• 2/3 or 10/15

• 7/15

• 8/15

A die is tossed 60 times. What is the expected frequency of throwing a 6?

• 1/6 or 10/60

• 1

• 6

• 10

A die is tossed 60 times. What is the expected frequency of throwing an even number greater than 2?

• 20

• 2

• 30

• 10

There is a 0.14 chance of rain each day in Sunshine Valley. How many rainy days are to be expected over the next 460 days?

• 0

• 14

• 7/230 or 14/460

• 69

There are 300 families with three children. How many of these families are expected to have 3 boys?

• 150

• 37.5

• 100

• can't say

Jessica wants to test if a coin is biased. She throws the coin 24 times. See diagram for outcome. What is the relative frequency of the coin landing on heads?

What is the experimental probability of rolling a 6?

Esme takes the bus to university 40 times during a term. The relative frequency of the bus being late is 0.3. How many times was the bus late?

• 14

• 12

• 16

• 28

A spinner lands on White, Black, Red and Orange. The relative frequencies after 300 spins are shown in table. How many times did the spinner land on White?

• 25

• 75

• 100

• 60